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crxiang:
写得很好啊,最近正好需要这个,谢谢分享了!
Android中ProgressDialog的简单示例 -
shangs2010:
分析的真仔细,多谢!
SharePreference类似于JavaEE中的session -
guochongcan:
fantaxy025025 写道兄弟,你这个不行的。
只能删 ...
MYSQL用一条SQL语句删除重复记录 -
fantaxy025025:
兄弟,你这个不行的。只能删除 重复个数是2的,如果重复个数大于 ...
MYSQL用一条SQL语句删除重复记录 -
wujiandong:
不错,多写点这方面的东西~~,加油~~,哥们~~
布局学习——妙用TabHost
android UI 往右滑动,滑动到最后一页就自动加载数据并显示
如图:
- package cn.anycall.ju;
- import java.util.ArrayList;
- import java.util.HashMap;
- import java.util.List;
- import java.util.Map;
- import android.app.Activity;
- import android.content.ActivityNotFoundException;
- import android.content.Context;
- import android.content.Intent;
- import android.content.pm.ResolveInfo;
- import android.os.Bundle;
- import android.os.Handler;
- import android.os.Looper;
- import android.os.Message;
- import android.view.KeyEvent;
- import android.view.View;
- import android.view.Window;
- import android.widget.AdapterView;
- import android.widget.AdapterView.OnItemClickListener;
- import android.widget.GridView;
- import android.widget.Toast;
- import cn.anycall.ju.ScrollLayout.OnScreenChangeListenerDataLoad;
- /**
- * GridView分页显示安装的应用程序
- */
- public class AllAppList extends Activity {
- private ScrollLayout mScrollLayout;
- private static final float APP_PAGE_SIZE = 4.0f;
- private Context mContext;
- private PageControlView pageControl;
- public MyHandler myHandler;
- public int n=0;
- private DataLoading dataLoad;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- // TODO Auto-generated method stub
- super.onCreate(savedInstanceState);
- this.requestWindowFeature(Window.FEATURE_NO_TITLE);
- mContext = this;
- setContentView(R.layout.main);
- dataLoad = new DataLoading();
- mScrollLayout = (ScrollLayout)findViewById(R.id.ScrollLayoutTest);
- myHandler = new MyHandler(this,1);
- //起一个线程更新数据
- MyThread m = new MyThread();
- new Thread(m).start();
- }
- /**
- * gridView 的onItemLick响应事件
- */
- public OnItemClickListener listener = new OnItemClickListener() {
- public void onItemClick(AdapterView<?> parent, View view, int position,
- long id) {
- // TODO Auto-generated method stub
- System.out.println("position="+position);
- }
- };
- @Override
- protected void onDestroy() {
- // TODO Auto-generated method stub
- android.os.Process.killProcess(android.os.Process.myPid());
- super.onDestroy();
- }
- @Override
- public boolean onKeyDown(int keyCode, KeyEvent event) {
- // TODO Auto-generated method stub
- if (keyCode == KeyEvent.KEYCODE_BACK) {
- finish();
- return true;
- }
- return super.onKeyDown(keyCode, event);
- }
- // 更新后台数据
- class MyThread implements Runnable {
- public void run() {
- try {
- Thread.sleep(1000*3);
- } catch (InterruptedException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- String msglist = "1";
- Message msg = new Message();
- Bundle b = new Bundle();// 存放数据
- b.putString("rmsg", msglist);
- msg.setData(b);
- AllAppList.this.myHandler.sendMessage(msg); // 向Handler发送消息,更新UI
- }
- }
- class MyHandler extends Handler {
- private AllAppList mContext;
- public MyHandler(Context conn,int a) {
- mContext = (AllAppList)conn;
- }
- public MyHandler(Looper L) {
- super(L);
- }
- // 子类必须重写此方法,接受数据
- @Override
- public void handleMessage(Message msg) {
- // TODO Auto-generated method stub
- super.handleMessage(msg);
- Bundle b = msg.getData();
- String rmsg = b.getString("rmsg");
- if ("1".equals(rmsg)) {
- // do nothing
- List<Map> list = new ArrayList<Map>();
- for(int i =0;i<16;i++){
- n++;
- Map map = new HashMap();
- map.put("name", n);
- list.add(map);
- }
- int pageNo = (int)Math.ceil( list.size()/APP_PAGE_SIZE);
- for (int i = 0; i < pageNo; i++) {
- GridView appPage = new GridView(mContext);
- // get the "i" page data
- appPage.setAdapter(new AppAdapter(mContext, list, i));
- appPage.setNumColumns(2);
- appPage.setOnItemClickListener(listener);
- mScrollLayout.addView(appPage);
- }
- //加载分页
- pageControl = (PageControlView) findViewById(R.id.pageControl);
- pageControl.bindScrollViewGroup(mScrollLayout);
- //加载分页数据
- dataLoad.bindScrollViewGroup(mScrollLayout);
- }
- }
- }
- //分页数据
- class DataLoading {
- private int count;
- public void bindScrollViewGroup(ScrollLayout scrollViewGroup) {
- this.count=scrollViewGroup.getChildCount();
- scrollViewGroup.setOnScreenChangeListenerDataLoad(new OnScreenChangeListenerDataLoad() {
- public void onScreenChange(int currentIndex) {
- // TODO Auto-generated method stub
- generatePageControl(currentIndex);
- }
- });
- }
- private void generatePageControl(int currentIndex){
- //如果到最后一页,就加载16条记录
- if(count==currentIndex+1){
- MyThread m = new MyThread();
- new Thread(m).start();
- }
- }
- }
- }
package cn.anycall.ju; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.app.Activity; import android.content.ActivityNotFoundException; import android.content.Context; import android.content.Intent; import android.content.pm.ResolveInfo; import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.os.Message; import android.view.KeyEvent; import android.view.View; import android.view.Window; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.GridView; import android.widget.Toast; import cn.anycall.ju.ScrollLayout.OnScreenChangeListenerDataLoad; /** * GridView分页显示安装的应用程序 */ public class AllAppList extends Activity { private ScrollLayout mScrollLayout; private static final float APP_PAGE_SIZE = 4.0f; private Context mContext; private PageControlView pageControl; public MyHandler myHandler; public int n=0; private DataLoading dataLoad; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); this.requestWindowFeature(Window.FEATURE_NO_TITLE); mContext = this; setContentView(R.layout.main); dataLoad = new DataLoading(); mScrollLayout = (ScrollLayout)findViewById(R.id.ScrollLayoutTest); myHandler = new MyHandler(this,1); //起一个线程更新数据 MyThread m = new MyThread(); new Thread(m).start(); } /** * gridView 的onItemLick响应事件 */ public OnItemClickListener listener = new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // TODO Auto-generated method stub System.out.println("position="+position); } }; @Override protected void onDestroy() { // TODO Auto-generated method stub android.os.Process.killProcess(android.os.Process.myPid()); super.onDestroy(); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { // TODO Auto-generated method stub if (keyCode == KeyEvent.KEYCODE_BACK) { finish(); return true; } return super.onKeyDown(keyCode, event); } // 更新后台数据 class MyThread implements Runnable { public void run() { try { Thread.sleep(1000*3); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } String msglist = "1"; Message msg = new Message(); Bundle b = new Bundle();// 存放数据 b.putString("rmsg", msglist); msg.setData(b); AllAppList.this.myHandler.sendMessage(msg); // 向Handler发送消息,更新UI } } class MyHandler extends Handler { private AllAppList mContext; public MyHandler(Context conn,int a) { mContext = (AllAppList)conn; } public MyHandler(Looper L) { super(L); } // 子类必须重写此方法,接受数据 @Override public void handleMessage(Message msg) { // TODO Auto-generated method stub super.handleMessage(msg); Bundle b = msg.getData(); String rmsg = b.getString("rmsg"); if ("1".equals(rmsg)) { // do nothing List<Map> list = new ArrayList<Map>(); for(int i =0;i<16;i++){ n++; Map map = new HashMap(); map.put("name", n); list.add(map); } int pageNo = (int)Math.ceil( list.size()/APP_PAGE_SIZE); for (int i = 0; i < pageNo; i++) { GridView appPage = new GridView(mContext); // get the "i" page data appPage.setAdapter(new AppAdapter(mContext, list, i)); appPage.setNumColumns(2); appPage.setOnItemClickListener(listener); mScrollLayout.addView(appPage); } //加载分页 pageControl = (PageControlView) findViewById(R.id.pageControl); pageControl.bindScrollViewGroup(mScrollLayout); //加载分页数据 dataLoad.bindScrollViewGroup(mScrollLayout); } } } //分页数据 class DataLoading { private int count; public void bindScrollViewGroup(ScrollLayout scrollViewGroup) { this.count=scrollViewGroup.getChildCount(); scrollViewGroup.setOnScreenChangeListenerDataLoad(new OnScreenChangeListenerDataLoad() { public void onScreenChange(int currentIndex) { // TODO Auto-generated method stub generatePageControl(currentIndex); } }); } private void generatePageControl(int currentIndex){ //如果到最后一页,就加载16条记录 if(count==currentIndex+1){ MyThread m = new MyThread(); new Thread(m).start(); } } } }
- package cn.anycall.ju;
- import java.util.ArrayList;
- import java.util.List;
- import java.util.Map;
- import android.content.Context;
- import android.content.pm.PackageManager;
- import android.content.pm.ResolveInfo;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.BaseAdapter;
- import android.widget.ImageView;
- import android.widget.TextView;
- import cn.anycall.ju.R;
- public class AppAdapter extends BaseAdapter {
- private List<Map> mList;
- private Context mContext;
- public static final int APP_PAGE_SIZE = 4;
- private PackageManager pm;
- public AppAdapter(Context context, List<Map> list, int page) {
- mContext = context;
- pm = context.getPackageManager();
- mList = new ArrayList<Map>();
- int i = page * APP_PAGE_SIZE;
- int iEnd = i+APP_PAGE_SIZE;
- while ((i<list.size()) && (i<iEnd)) {
- mList.add(list.get(i));
- i++;
- }
- }
- public int getCount() {
- // TODO Auto-generated method stub
- return mList.size();
- }
- public Object getItem(int position) {
- // TODO Auto-generated method stub
- return mList.get(position);
- }
- public long getItemId(int position) {
- // TODO Auto-generated method stub
- return position;
- }
- public View getView(int position, View convertView, ViewGroup parent) {
- // TODO Auto-generated method stub
- Map appInfo = mList.get(position);
- AppItem appItem;
- if (convertView == null) {
- View v = LayoutInflater.from(mContext).inflate(R.layout.app_item, null);
- appItem = new AppItem();
- appItem.mAppIcon = (ImageView)v.findViewById(R.id.imgdetail);
- appItem.mAppName = (TextView)v.findViewById(R.id.tuaninfo);
- v.setTag(appItem);
- convertView = v;
- } else {
- appItem = (AppItem)convertView.getTag();
- }
- // set the icon
- appItem.mAppIcon.setImageResource(R.drawable.icon);
- // set the app name
- appItem.mAppName.setText(appInfo.get("name").toString());
- return convertView;
- }
- /**
- * 每个应用显示的内容,包括图标和名称
- * @author Yao.GUET
- *
- */
- class AppItem {
- ImageView mAppIcon;
- TextView mAppName;
- }
- }
package cn.anycall.ju; import java.util.ArrayList; import java.util.List; import java.util.Map; import android.content.Context; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView; import cn.anycall.ju.R; public class AppAdapter extends BaseAdapter { private List<Map> mList; private Context mContext; public static final int APP_PAGE_SIZE = 4; private PackageManager pm; public AppAdapter(Context context, List<Map> list, int page) { mContext = context; pm = context.getPackageManager(); mList = new ArrayList<Map>(); int i = page * APP_PAGE_SIZE; int iEnd = i+APP_PAGE_SIZE; while ((i<list.size()) && (i<iEnd)) { mList.add(list.get(i)); i++; } } public int getCount() { // TODO Auto-generated method stub return mList.size(); } public Object getItem(int position) { // TODO Auto-generated method stub return mList.get(position); } public long getItemId(int position) { // TODO Auto-generated method stub return position; } public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub Map appInfo = mList.get(position); AppItem appItem; if (convertView == null) { View v = LayoutInflater.from(mContext).inflate(R.layout.app_item, null); appItem = new AppItem(); appItem.mAppIcon = (ImageView)v.findViewById(R.id.imgdetail); appItem.mAppName = (TextView)v.findViewById(R.id.tuaninfo); v.setTag(appItem); convertView = v; } else { appItem = (AppItem)convertView.getTag(); } // set the icon appItem.mAppIcon.setImageResource(R.drawable.icon); // set the app name appItem.mAppName.setText(appInfo.get("name").toString()); return convertView; } /** * 每个应用显示的内容,包括图标和名称 * @author Yao.GUET * */ class AppItem { ImageView mAppIcon; TextView mAppName; } }
- package cn.anycall.ju;
- import android.content.Context;
- import android.util.AttributeSet;
- import android.widget.ImageView;
- import android.widget.LinearLayout;
- import cn.anycall.ju.R;
- import cn.anycall.ju.ScrollLayout.OnScreenChangeListener;
- public class PageControlView extends LinearLayout {
- private Context context;
- private int count;
- public void bindScrollViewGroup(ScrollLayout scrollViewGroup) {
- this.count=scrollViewGroup.getChildCount();
- System.out.println("count="+count);
- generatePageControl(scrollViewGroup.getCurrentScreenIndex());
- scrollViewGroup.setOnScreenChangeListener(new OnScreenChangeListener() {
- public void onScreenChange(int currentIndex) {
- // TODO Auto-generated method stub
- generatePageControl(currentIndex);
- }
- });
- }
- public PageControlView(Context context) {
- super(context);
- this.init(context);
- }
- public PageControlView(Context context, AttributeSet attrs) {
- super(context, attrs);
- this.init(context);
- }
- private void init(Context context) {
- this.context=context;
- }
- private void generatePageControl(int currentIndex) {
- this.removeAllViews();
- int pageNum = 6; // 显示多少个
- int pageNo = currentIndex+1; //第几页
- int pageSum = this.count; //总共多少页
- if(pageSum>1){
- int currentNum = (pageNo % pageNum == 0 ? (pageNo / pageNum) - 1
- : (int) (pageNo / pageNum))
- * pageNum;
- if (currentNum < 0)
- currentNum = 0;
- if (pageNo > pageNum){
- ImageView imageView = new ImageView(context);
- imageView.setImageResource(R.drawable.zuo);
- this.addView(imageView);
- }
- for (int i = 0; i < pageNum; i++) {
- if ((currentNum + i + 1) > pageSum || pageSum < 2)
- break;
- ImageView imageView = new ImageView(context);
- if(currentNum + i + 1 == pageNo){
- imageView.setImageResource(R.drawable.page_indicator_focused);
- }else{
- imageView.setImageResource(R.drawable.page_indicator);
- }
- this.addView(imageView);
- }
- if (pageSum > (currentNum + pageNum)) {
- ImageView imageView = new ImageView(context);
- imageView.setImageResource(R.drawable.you);
- this.addView(imageView);
- }
- }
- }
- }
package cn.anycall.ju; import android.content.Context; import android.util.AttributeSet; import android.widget.ImageView; import android.widget.LinearLayout; import cn.anycall.ju.R; import cn.anycall.ju.ScrollLayout.OnScreenChangeListener; public class PageControlView extends LinearLayout { private Context context; private int count; public void bindScrollViewGroup(ScrollLayout scrollViewGroup) { this.count=scrollViewGroup.getChildCount(); System.out.println("count="+count); generatePageControl(scrollViewGroup.getCurrentScreenIndex()); scrollViewGroup.setOnScreenChangeListener(new OnScreenChangeListener() { public void onScreenChange(int currentIndex) { // TODO Auto-generated method stub generatePageControl(currentIndex); } }); } public PageControlView(Context context) { super(context); this.init(context); } public PageControlView(Context context, AttributeSet attrs) { super(context, attrs); this.init(context); } private void init(Context context) { this.context=context; } private void generatePageControl(int currentIndex) { this.removeAllViews(); int pageNum = 6; // 显示多少个 int pageNo = currentIndex+1; //第几页 int pageSum = this.count; //总共多少页 if(pageSum>1){ int currentNum = (pageNo % pageNum == 0 ? (pageNo / pageNum) - 1 : (int) (pageNo / pageNum)) * pageNum; if (currentNum < 0) currentNum = 0; if (pageNo > pageNum){ ImageView imageView = new ImageView(context); imageView.setImageResource(R.drawable.zuo); this.addView(imageView); } for (int i = 0; i < pageNum; i++) { if ((currentNum + i + 1) > pageSum || pageSum < 2) break; ImageView imageView = new ImageView(context); if(currentNum + i + 1 == pageNo){ imageView.setImageResource(R.drawable.page_indicator_focused); }else{ imageView.setImageResource(R.drawable.page_indicator); } this.addView(imageView); } if (pageSum > (currentNum + pageNum)) { ImageView imageView = new ImageView(context); imageView.setImageResource(R.drawable.you); this.addView(imageView); } } } }
- package cn.anycall.ju;
- import android.content.Context;
- import android.graphics.Canvas;
- import android.util.AttributeSet;
- import android.util.Log;
- import android.view.MotionEvent;
- import android.view.VelocityTracker;
- import android.view.View;
- import android.view.ViewConfiguration;
- import android.view.ViewGroup;
- import android.widget.Scroller;
- /**
- * 仿Launcher中的WorkSapce,可以左右滑动切换屏幕的类
- *
- */
- public class ScrollLayout extends ViewGroup {
- private static final String TAG = "ScrollLayout";
- private Scroller mScroller;
- private VelocityTracker mVelocityTracker;
- private int mCurScreen;
- private int mDefaultScreen = 0;
- private static final int TOUCH_STATE_REST = 0;
- private static final int TOUCH_STATE_SCROLLING = 1;
- private static final int SNAP_VELOCITY = 600;
- private int mTouchState = TOUCH_STATE_REST;
- private int mTouchSlop;
- private float mLastMotionX;
- private float mLastMotionY;
- private int currentScreenIndex = 0;
- public int getCurrentScreenIndex() {
- return currentScreenIndex;
- }
- public void setCurrentScreenIndex(int currentScreenIndex) {
- this.currentScreenIndex = currentScreenIndex;
- }
- public ScrollLayout(Context context, AttributeSet attrs) {
- this(context, attrs, 0);
- // TODO Auto-generated constructor stub
- }
- public ScrollLayout(Context context, AttributeSet attrs, int defStyle) {
- super(context, attrs, defStyle);
- // TODO Auto-generated constructor stub
- mScroller = new Scroller(context);
- mCurScreen = mDefaultScreen;
- mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
- }
- @Override
- protected void onLayout(boolean changed, int l, int t, int r, int b) {
- // TODO Auto-generated method stub
- int childLeft = 0;
- final int childCount = getChildCount();
- System.out.println("childCount=" + childCount);
- for (int i = 0; i < childCount; i++) {
- final View childView = getChildAt(i);
- if (childView.getVisibility() != View.GONE) {
- final int childWidth = childView.getMeasuredWidth();
- childView.layout(childLeft, 0, childLeft + childWidth,
- childView.getMeasuredHeight());
- childLeft += childWidth;
- }
- }
- }
- @Override
- protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
- Log.e(TAG, "onMeasure");
- super.onMeasure(widthMeasureSpec, heightMeasureSpec);
- final int width = MeasureSpec.getSize(widthMeasureSpec);
- final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
- if (widthMode != MeasureSpec.EXACTLY) {
- throw new IllegalStateException(
- "ScrollLayout only canmCurScreen run at EXACTLY mode!");
- }
- final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
- if (heightMode != MeasureSpec.EXACTLY) {
- throw new IllegalStateException(
- "ScrollLayout only can run at EXACTLY mode!");
- }
- // The children are given the same width and height as the scrollLayout
- final int count = getChildCount();
- for (int i = 0; i < count; i++) {
- getChildAt(i).measure(widthMeasureSpec, heightMeasureSpec);
- }
- System.out.println("moving to screen " + mCurScreen);
- scrollTo(mCurScreen * width, 0);
- }
- /**
- * According to the position of current layout scroll to the destination
- * page.
- */
- public void snapToDestination() {
- final int screenWidth = getWidth();
- final int destScreen = (getScrollX() + screenWidth / 2) / screenWidth;
- snapToScreen(destScreen);
- }
- public void snapToScreen(int whichScreen) {
- // get the valid layout page
- whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1));
- if (getScrollX() != (whichScreen * getWidth())) {
- final int delta = whichScreen * getWidth() - getScrollX();
- mScroller.startScroll(getScrollX(), 0, delta, 0,
- Math.abs(delta) * 2);
- mCurScreen = whichScreen;
- invalidate(); // Redraw the layout
- }
- }
- public void setToScreen(int whichScreen) {
- whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1));
- mCurScreen = whichScreen;
- scrollTo(whichScreen * getWidth(), 0);
- }
- public int getCurScreen() {
- return mCurScreen;
- }
- @Override
- public void computeScroll() {
- // TODO Auto-generated method stub
- if (mScroller.computeScrollOffset()) {
- scrollTo(mScroller.getCurrX(), mScroller.getCurrY());
- postInvalidate();
- }
- }
- @Override
- public boolean onTouchEvent(MotionEvent event) {
- // TODO Auto-generated method stub
- if (mVelocityTracker == null) {
- mVelocityTracker = VelocityTracker.obtain();
- }
- mVelocityTracker.addMovement(event);
- final int action = event.getAction();
- final float x = event.getX();
- final float y = event.getY();
- switch (action) {
- case MotionEvent.ACTION_DOWN:
- Log.e(TAG, "event down!");
- if (!mScroller.isFinished()) {
- mScroller.abortAnimation();
- }
- mLastMotionX = x;
- break;
- case MotionEvent.ACTION_MOVE:
- int deltaX = (int) (mLastMotionX - x);
- mLastMotionX = x;
- scrollBy(deltaX, 0);
- break;
- case MotionEvent.ACTION_UP:
- Log.e(TAG, "event : up");
- // if (mTouchState == TOUCH_STATE_SCROLLING) {
- final VelocityTracker velocityTracker = mVelocityTracker;
- velocityTracker.computeCurrentVelocity(1000);
- int velocityX = (int) velocityTracker.getXVelocity();
- Log.e(TAG, "velocityX:" + velocityX);
- if (velocityX > SNAP_VELOCITY && mCurScreen > 0) {
- // Fling enough to move left
- Log.e(TAG, "snap left");
- onScreenChangeListener.onScreenChange(mCurScreen - 1);
- System.out.println("mCurScreen=" + (mCurScreen - 1));
- snapToScreen(mCurScreen - 1);
- } else if (velocityX < -SNAP_VELOCITY
- && mCurScreen < getChildCount() - 1) {
- // Fling enough to move right
- Log.e(TAG, "snap right");
- onScreenChangeListener.onScreenChange(mCurScreen + 1);
- //只往右移动才加载数据
- onScreenChangeListenerDataLoad.onScreenChange(mCurScreen+1);
- snapToScreen(mCurScreen + 1);
- } else {
- snapToDestination();
- }
- if (mVelocityTracker != null) {
- mVelocityTracker.recycle();
- mVelocityTracker = null;
- }
- // }
- mTouchState = TOUCH_STATE_REST;
- break;
- case MotionEvent.ACTION_CANCEL:
- mTouchState = TOUCH_STATE_REST;
- break;
- }
- return true;
- }
- @Override
- public boolean onInterceptTouchEvent(MotionEvent ev) {
- // TODO Auto-generated method stub
- Log.e(TAG, "onInterceptTouchEvent-slop:" + mTouchSlop);
- final int action = ev.getAction();
- if ((action == MotionEvent.ACTION_MOVE)
- && (mTouchState != TOUCH_STATE_REST)) {
- return true;
- }
- final float x = ev.getX();
- final float y = ev.getY();
- switch (action) {
- case MotionEvent.ACTION_MOVE:
- final int xDiff = (int) Math.abs(mLastMotionX - x);
- if (xDiff > mTouchSlop) {
- mTouchState = TOUCH_STATE_SCROLLING;
- }
- break;
- case MotionEvent.ACTION_DOWN:
- mLastMotionX = x;
- mLastMotionY = y;
- mTouchState = mScroller.isFinished() ? TOUCH_STATE_REST
- : TOUCH_STATE_SCROLLING;
- break;
- case MotionEvent.ACTION_CANCEL:
- case MotionEvent.ACTION_UP:
- mTouchState = TOUCH_STATE_REST;
- break;
- }
- return mTouchState != TOUCH_STATE_REST;
- }
- //分页监听
- public interface OnScreenChangeListener {
- void onScreenChange(int currentIndex);
- }
- private OnScreenChangeListener onScreenChangeListener;
- public void setOnScreenChangeListener(
- OnScreenChangeListener onScreenChangeListener) {
- this.onScreenChangeListener = onScreenChangeListener;
- }
- //动态数据监听
- public interface OnScreenChangeListenerDataLoad {
- void onScreenChange(int currentIndex);
- }
- private OnScreenChangeListenerDataLoad onScreenChangeListenerDataLoad;
- public void setOnScreenChangeListenerDataLoad(OnScreenChangeListenerDataLoad onScreenChangeListenerDataLoad) {
- this.onScreenChangeListenerDataLoad = onScreenChangeListenerDataLoad;
- }
- }
package cn.anycall.ju; import android.content.Context; import android.graphics.Canvas; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.VelocityTracker; import android.view.View; import android.view.ViewConfiguration; import android.view.ViewGroup; import android.widget.Scroller; /** * 仿Launcher中的WorkSapce,可以左右滑动切换屏幕的类 * */ public class ScrollLayout extends ViewGroup { private static final String TAG = "ScrollLayout"; private Scroller mScroller; private VelocityTracker mVelocityTracker; private int mCurScreen; private int mDefaultScreen = 0; private static final int TOUCH_STATE_REST = 0; private static final int TOUCH_STATE_SCROLLING = 1; private static final int SNAP_VELOCITY = 600; private int mTouchState = TOUCH_STATE_REST; private int mTouchSlop; private float mLastMotionX; private float mLastMotionY; private int currentScreenIndex = 0; public int getCurrentScreenIndex() { return currentScreenIndex; } public void setCurrentScreenIndex(int currentScreenIndex) { this.currentScreenIndex = currentScreenIndex; } public ScrollLayout(Context context, AttributeSet attrs) { this(context, attrs, 0); // TODO Auto-generated constructor stub } public ScrollLayout(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // TODO Auto-generated constructor stub mScroller = new Scroller(context); mCurScreen = mDefaultScreen; mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); } @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { // TODO Auto-generated method stub int childLeft = 0; final int childCount = getChildCount(); System.out.println("childCount=" + childCount); for (int i = 0; i < childCount; i++) { final View childView = getChildAt(i); if (childView.getVisibility() != View.GONE) { final int childWidth = childView.getMeasuredWidth(); childView.layout(childLeft, 0, childLeft + childWidth, childView.getMeasuredHeight()); childLeft += childWidth; } } } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { Log.e(TAG, "onMeasure"); super.onMeasure(widthMeasureSpec, heightMeasureSpec); final int width = MeasureSpec.getSize(widthMeasureSpec); final int widthMode = MeasureSpec.getMode(widthMeasureSpec); if (widthMode != MeasureSpec.EXACTLY) { throw new IllegalStateException( "ScrollLayout only canmCurScreen run at EXACTLY mode!"); } final int heightMode = MeasureSpec.getMode(heightMeasureSpec); if (heightMode != MeasureSpec.EXACTLY) { throw new IllegalStateException( "ScrollLayout only can run at EXACTLY mode!"); } // The children are given the same width and height as the scrollLayout final int count = getChildCount(); for (int i = 0; i < count; i++) { getChildAt(i).measure(widthMeasureSpec, heightMeasureSpec); } System.out.println("moving to screen " + mCurScreen); scrollTo(mCurScreen * width, 0); } /** * According to the position of current layout scroll to the destination * page. */ public void snapToDestination() { final int screenWidth = getWidth(); final int destScreen = (getScrollX() + screenWidth / 2) / screenWidth; snapToScreen(destScreen); } public void snapToScreen(int whichScreen) { // get the valid layout page whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1)); if (getScrollX() != (whichScreen * getWidth())) { final int delta = whichScreen * getWidth() - getScrollX(); mScroller.startScroll(getScrollX(), 0, delta, 0, Math.abs(delta) * 2); mCurScreen = whichScreen; invalidate(); // Redraw the layout } } public void setToScreen(int whichScreen) { whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1)); mCurScreen = whichScreen; scrollTo(whichScreen * getWidth(), 0); } public int getCurScreen() { return mCurScreen; } @Override public void computeScroll() { // TODO Auto-generated method stub if (mScroller.computeScrollOffset()) { scrollTo(mScroller.getCurrX(), mScroller.getCurrY()); postInvalidate(); } } @Override public boolean onTouchEvent(MotionEvent event) { // TODO Auto-generated method stub if (mVelocityTracker == null) { mVelocityTracker = VelocityTracker.obtain(); } mVelocityTracker.addMovement(event); final int action = event.getAction(); final float x = event.getX(); final float y = event.getY(); switch (action) { case MotionEvent.ACTION_DOWN: Log.e(TAG, "event down!"); if (!mScroller.isFinished()) { mScroller.abortAnimation(); } mLastMotionX = x; break; case MotionEvent.ACTION_MOVE: int deltaX = (int) (mLastMotionX - x); mLastMotionX = x; scrollBy(deltaX, 0); break; case MotionEvent.ACTION_UP: Log.e(TAG, "event : up"); // if (mTouchState == TOUCH_STATE_SCROLLING) { final VelocityTracker velocityTracker = mVelocityTracker; velocityTracker.computeCurrentVelocity(1000); int velocityX = (int) velocityTracker.getXVelocity(); Log.e(TAG, "velocityX:" + velocityX); if (velocityX > SNAP_VELOCITY && mCurScreen > 0) { // Fling enough to move left Log.e(TAG, "snap left"); onScreenChangeListener.onScreenChange(mCurScreen - 1); System.out.println("mCurScreen=" + (mCurScreen - 1)); snapToScreen(mCurScreen - 1); } else if (velocityX < -SNAP_VELOCITY && mCurScreen < getChildCount() - 1) { // Fling enough to move right Log.e(TAG, "snap right"); onScreenChangeListener.onScreenChange(mCurScreen + 1); //只往右移动才加载数据 onScreenChangeListenerDataLoad.onScreenChange(mCurScreen+1); snapToScreen(mCurScreen + 1); } else { snapToDestination(); } if (mVelocityTracker != null) { mVelocityTracker.recycle(); mVelocityTracker = null; } // } mTouchState = TOUCH_STATE_REST; break; case MotionEvent.ACTION_CANCEL: mTouchState = TOUCH_STATE_REST; break; } return true; } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { // TODO Auto-generated method stub Log.e(TAG, "onInterceptTouchEvent-slop:" + mTouchSlop); final int action = ev.getAction(); if ((action == MotionEvent.ACTION_MOVE) && (mTouchState != TOUCH_STATE_REST)) { return true; } final float x = ev.getX(); final float y = ev.getY(); switch (action) { case MotionEvent.ACTION_MOVE: final int xDiff = (int) Math.abs(mLastMotionX - x); if (xDiff > mTouchSlop) { mTouchState = TOUCH_STATE_SCROLLING; } break; case MotionEvent.ACTION_DOWN: mLastMotionX = x; mLastMotionY = y; mTouchState = mScroller.isFinished() ? TOUCH_STATE_REST : TOUCH_STATE_SCROLLING; break; case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: mTouchState = TOUCH_STATE_REST; break; } return mTouchState != TOUCH_STATE_REST; } //分页监听 public interface OnScreenChangeListener { void onScreenChange(int currentIndex); } private OnScreenChangeListener onScreenChangeListener; public void setOnScreenChangeListener( OnScreenChangeListener onScreenChangeListener) { this.onScreenChangeListener = onScreenChangeListener; } //动态数据监听 public interface OnScreenChangeListenerDataLoad { void onScreenChange(int currentIndex); } private OnScreenChangeListenerDataLoad onScreenChangeListenerDataLoad; public void setOnScreenChangeListenerDataLoad(OnScreenChangeListenerDataLoad onScreenChangeListenerDataLoad) { this.onScreenChangeListenerDataLoad = onScreenChangeListenerDataLoad; } }
main.xml
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- >
- <TextView android:layout_width="fill_parent"
- android:layout_height="wrap_content" android:text="仿淘宝聚划算"/>
- <RelativeLayout
- android:id="@+id/myView"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- >
- <cn.anycall.ju.ScrollLayout
- xmlns:android="http://schemas.android.com/apk/res/android"
- android:id="@+id/ScrollLayoutTest"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent" android:background="#000000" >
- </cn.anycall.ju.ScrollLayout>
- <cn.anycall.ju.PageControlView
- android:id="@+id/pageControl"
- android:layout_width="fill_parent"
- android:layout_height="40px"
- android:background="#8f00000f"
- android:layout_alignParentBottom="true"
- android:gravity="center"/>
- </RelativeLayout>
- </LinearLayout>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="仿淘宝聚划算"/> <RelativeLayout android:id="@+id/myView" android:layout_width="fill_parent" android:layout_height="fill_parent" > <cn.anycall.ju.ScrollLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/ScrollLayoutTest" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#000000" > </cn.anycall.ju.ScrollLayout> <cn.anycall.ju.PageControlView android:id="@+id/pageControl" android:layout_width="fill_parent" android:layout_height="40px" android:background="#8f00000f" android:layout_alignParentBottom="true" android:gravity="center"/> </RelativeLayout> </LinearLayout>
app_item.xml
- <?xml version="1.0" encoding="utf-8"?>
- <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- >
- <RelativeLayout android:id="@+id/alllayout" android:layout_width="wrap_content" android:layout_height="wrap_content">
- <RelativeLayout android:id="@+id/imglayout" android:layout_width="160dp" android:layout_height="160dp" android:background="@drawable/mer_border">
- <ImageView android:id="@+id/imgdetail" android:layout_width="145dp" android:layout_height="145dp" android:layout_margin="8dp" />
- <TextView android:id="@+id/price" android:layout_width="180dp" android:layout_height="wrap_content" android:text="12345" android:layout_alignParentBottom="true" android:background="#C02000" android:textColor="#FFFFFF"/>
- <TextView android:id="@+id/look" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="去看看" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:background="#C02000" android:textColor="#FFFFFF"/>
- </RelativeLayout>
- <TextView android:id="@+id/tuaninfo" android:layout_width="fill_parent"
- android:layout_height="wrap_content" android:textSize="16dp"
- android:maxLines="2" android:layout_below="@id/imglayout"
- android:ellipsize="end" android:text="dddddddddd"/>"
- </RelativeLayout>
- </RelativeLayout>
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" > <RelativeLayout android:id="@+id/alllayout" android:layout_width="wrap_content" android:layout_height="wrap_content"> <RelativeLayout android:id="@+id/imglayout" android:layout_width="160dp" android:layout_height="160dp" android:background="@drawable/mer_border"> <ImageView android:id="@+id/imgdetail" android:layout_width="145dp" android:layout_height="145dp" android:layout_margin="8dp" /> <TextView android:id="@+id/price" android:layout_width="180dp" android:layout_height="wrap_content" android:text="12345" android:layout_alignParentBottom="true" android:background="#C02000" android:textColor="#FFFFFF"/> <TextView android:id="@+id/look" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="去看看" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:background="#C02000" android:textColor="#FFFFFF"/> </RelativeLayout> <TextView android:id="@+id/tuaninfo" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="16dp" android:maxLines="2" android:layout_below="@id/imglayout" android:ellipsize="end" android:text="dddddddddd"/>" </RelativeLayout> </RelativeLayout>
程序下载包如下
- AllAppList.zip (165.2 KB)
- 下载次数: 153
发表评论
-
使用 SharedPreferences
2013-01-31 21:37 1211SharedPreferences是一种轻量级的数据存储 ... -
android:windowSoftInputMode属性详解
2012-11-01 07:36 837android:windowSoftInputMode ac ... -
自定义ListView中的分割线
2012-11-01 07:12 2295ListView中每个Item项之间都有分割线,设置andro ... -
Android中Bitmap和Drawable
2012-10-24 17:54 996一、相关概念 1、Drawable就是一个可画的对象,其可能 ... -
在EditText/TextView中插入表情图片、样式、下划线等
2012-09-23 20:03 2691EditText: 通常用于显示 ... -
Android开发:在EditText中关闭软键盘
2012-09-23 14:41 18391、EditText有焦点(focusable为true) ... -
Android 字体和颜色
2012-06-23 18:34 982对于能够显示文字的控件(如TextView EditText ... -
解决Eclipse Indigo(3.7)中文字体偏小问题
2012-06-04 20:33 1109===========转============= ... -
Android中Cursor 的一些方法
2012-05-16 17:15 1471close() //关闭游标,释放资源 copyStrin ... -
ContentProvider分析
2012-05-15 22:24 1010红色部分较重要的 private static ... -
Java的log 的几种表示颜色
2012-05-09 16:12 0Log下面的日志颜色 E Error 红 ... -
android单元测试时,异常情况解决记录
2012-04-07 20:26 1547异常内容 java.lang.NoClassDefFo ... -
Android_SDK及ADT升级方法
2012-04-05 10:57 25425本文只讲如何 ... -
android 退出程序 对话框提醒
2012-03-17 20:23 0if (keyCode == KeyEvent.KEYCO ... -
DBA应该具有什么样的素质?——转
2012-03-17 20:18 0问题起源于在写一份材 ... -
抓住移动互联网发展最佳时机,开发最好的移动应用程序,为用户提供最佳的软件服务
2012-03-04 20:03 0抓住移动互联网发展最佳时机,开发最好的移动应用程序,为用户提供 ... -
Android WebView 浏览器
2012-01-01 09:38 4199WebView的使用很方便。在学习WebView之前,我 ... -
android ImageView的scaleType属性
2011-12-27 13:07 1193ImageView:Displays an arbitra ... -
程序实现线性布局相关
2011-12-26 15:42 1050程序实现线性布局相关1、 LinearLayout l ... -
Android中Toast的用法简介
2011-12-24 21:20 1415Toast是Android中用来显示显示信息的一种机制,和Di ...
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