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284772894:
好文章,谢谢
android硬件传感器 -
康妮西:
求这个View的解释望博主联系,我的联系方式:kangnixi ...
让scrollview在滚动的过程中自动定位页的边边 -
muyu114:
你这个是啥意思啊,有什么效果没有
让scrollview在滚动的过程中自动定位页的边边
1.如果你有一个ListView,listView的 adapter 是自定义的,并且item中包含一个CheckBox 跟其他的一些组件,
如果你想通过额外一的一个CheckBox来实现select All 跟dis select all 以及 手动 选择的话,可参照下面的实现方式。
merge_list_item.xml
MergeListActivity.java
MergeListAdapter.java
实现效果:
全选
全不选
全选后再手动去除几个
如果你想通过额外一的一个CheckBox来实现select All 跟dis select all 以及 手动 选择的话,可参照下面的实现方式。
merge_list_item.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/item" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:padding="4dp"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="left" android:layout_alignParentLeft="true"> <RelativeLayout android:id="@+id/avatarLayout_1" android:layout_width="60dip" android:layout_height="60dip" android:background="@drawable/frame"> <ImageView android:id="@+id/avatar_1" android:layout_width="60dip" android:layout_height="60dip" android:layout_alignParentLeft="true" android:src="@drawable/default_avatar" /> <ImageView android:id="@+id/sns_type_icon_1" android:layout_width="25dip" android:layout_height="25dip" android:paddingRight="5dip" android:paddingLeft="3dip" android:layout_alignBottom="@id/avatar_1" android:layout_alignRight="@id/avatar_1" /> </RelativeLayout> <TextView android:layout_below="@+id/item" android:layout_toRightOf="@+id/avatarLayout_1" android:layout_centerVertical="true" android:paddingLeft="1dip" android:id="@+id/name_1" android:layout_width="60dip" android:layout_height="wrap_content" android:textSize="18dip" android:layout_weight="1" android:textColor="#ffffff" android:text="Contact1" /> </LinearLayout> <CheckBox android:id="@+id/link" android:layout_centerHorizontal="true" android:layout_centerInParent="true" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="right" android:layout_alignParentRight="true"> <TextView android:layout_below="@+id/item" android:layout_centerVertical="true" android:paddingRight="1dip" android:id="@+id/name_2" android:layout_width="60dp" android:layout_height="wrap_content" android:textSize="18dip" android:layout_weight="1" android:textColor="#ffffff" android:text="Contact2" /> <RelativeLayout android:id="@+id/avatarLayout_2" android:layout_width="60dip" android:layout_height="60dip" android:background="@drawable/frame"> <ImageView android:id="@+id/avatar_2" android:layout_width="60dip" android:layout_height="60dip" android:layout_alignParentLeft="true" android:src="@drawable/default_avatar" /> <ImageView android:id="@+id/sns_type_icon_2" android:layout_width="25dip" android:layout_height="25dip" android:paddingRight="5dip" android:paddingLeft="3dip" android:layout_alignBottom="@id/avatar_2" android:layout_alignRight="@id/avatar_2" /> </RelativeLayout> </LinearLayout> </RelativeLayout>
MergeListActivity.java
public class MergeListActivity extends Activity{ public MergeListAdapter mAdapter; ListView mergeListView; /* (non-Javadoc) * @see android.app.Activity#onCreate(android.os.Bundle) */ @Override protected void onCreate(Bundle savedInstanceState) { setContentView(R.layout.merge_list); initMergeList(); super.onCreate(savedInstanceState); } public void initMergeList(){ MyLog.println("MergeListActivity.initMergeList"); // get the list view final ListView mergeListView = ((ListView) findViewById(R.id.merge_list)); mAdapter = new MergeListAdapter(this); //add header if (mergeListView.getHeaderViewsCount() == 0){ final RelativeLayout header = (RelativeLayout) LayoutInflater.from(MergeListActivity.this) .inflate(R.layout.merge_list_header, null); mergeListView.addHeaderView(header); final CheckBox selectAll = (CheckBox)header.findViewById(R.id.selectedAll); selectAll.setOnCheckedChangeListener(new OnCheckedChangeListener(){ @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { //mergeListView.setSelected(true); mAdapter.setAllChecked(isChecked); } }); final Button cancel = (Button)findViewById(R.id.btn_cancel); cancel.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { finish(); } }); final Button ok = (Button)findViewById(R.id.btn_ok); ok.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { mAdapter.autoMergeSelectItems(); finish(); } }); } mergeListView.setAdapter(mAdapter); } }
MergeListAdapter.java
public class MergeListAdapter extends BaseAdapter { private Context mContext; public static ArrayList<SimpleContact> similar_1; public static ArrayList<SimpleContact> similar_2; public static LayoutInflater inflater = null; private ArrayList<Boolean> checkBoxStateList = new ArrayList<Boolean>(); private ArrayList<CheckBox> ctv = new ArrayList<CheckBox>(); public MergeListAdapter(Context context) { mContext = context; inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); for(int i = 0; i < similar_1.size(); i++){ checkBoxStateList.add(i,false); } } public int getCount() { return similar_1.size(); } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } private void onClickItem(int position){ MyLog.println("MergeListActivity.onClickItem"); final int contactID1 = Integer.parseInt(similar_1.get(position).contactID); final int contactID2 = Integer.parseInt(similar_2.get(position).contactID); Intent itent = new Intent(mContext,MergeDetailActivity.class); itent.putExtra(IntentExtraName.EXTRA_PRIMARY_CONTACT_ID_NAME, contactID1); itent.putExtra(IntentExtraName.EXTRA_SECONDARY_CONTACT_ID_NAME, contactID2); mContext.startActivity(itent); } public static class ViewHolder{ public ImageView avatar_1; public ImageView avatar_2; public TextView name_1; public TextView name_2; public ImageView snsTypeIcon_1; public ImageView snsTypeIcon_2; public CheckBox checkBox; } public View getView( final int position, View convertView, ViewGroup parent) { View row = convertView; ViewHolder holder; if(convertView==null) { row = inflater.inflate(R.layout.merge_list_item, parent, false); holder = new ViewHolder(); holder.avatar_1 = (ImageView)row.findViewById(R.id.avatar_1); holder.name_1 = (TextView)row.findViewById(R.id.name_1); holder.snsTypeIcon_1 = (ImageView)row.findViewById(R.id.sns_type_icon_1); holder.checkBox = (CheckBox)row.findViewById(R.id.link); holder.avatar_2 = (ImageView)row.findViewById(R.id.avatar_2); holder.name_2 = (TextView)row.findViewById(R.id.name_2); holder.snsTypeIcon_2 = (ImageView)row.findViewById(R.id.sns_type_icon_2); holder.checkBox.setTag(position); row.setTag(holder); }else{ holder = (ViewHolder)row.getTag(); } final SimpleContact contact1 = similar_1.get(position); final SimpleContact contact2 = similar_2.get(position); final ContentResolver cr = mContext.getContentResolver(); final Bitmap avater_1 = DataOperations.getAvatar(Long.parseLong(contact1.contactID), cr); final String name_1 = contact1.displayName; final Bitmap avater_2 = DataOperations.getAvatar(Long.parseLong(contact2.contactID),cr ); final String name_2 = contact2.displayName; //avatar if (avater_1 != null){ holder.avatar_1.setImageBitmap(avater_1); }else{ holder.avatar_1.setBackgroundResource(R.drawable.default_avatar); } if (avater_2 != null){ holder.avatar_2.setImageBitmap(avater_2); }else{ holder.avatar_2.setBackgroundResource(R.drawable.default_avatar); } //name holder.name_1.setText(name_1); holder.name_2.setText(name_2); //icon of snsType if (RichContactConfig.CONTACT_TYPE_FACEBOOK == Integer.parseInt(contact1.contactType)){ holder.snsTypeIcon_1.setImageResource(R.drawable.facebook_s); }else if (RichContactConfig.CONTACT_TYPE_SINA == Integer.parseInt(contact1.contactType)){ holder.snsTypeIcon_1.setImageResource(R.drawable.sina_s); } if (RichContactConfig.CONTACT_TYPE_FACEBOOK == Integer.parseInt(contact2.contactType)){ holder.snsTypeIcon_2.setImageResource(R.drawable.facebook_s); }else if (RichContactConfig.CONTACT_TYPE_SINA == Integer.parseInt(contact2.contactType)){ holder.snsTypeIcon_2.setImageResource(R.drawable.sina_s); } ctv.add(holder.checkBox); holder.checkBox.setChecked(checkBoxStateList.get(position)); holder.checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if(isChecked){ checkBoxStateList.set(position, true); } else { checkBoxStateList.set(position,false); } } }); final int index = position; row.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { onClickItem(index); } }); row.setId(position); return row; } public boolean isChecked(int position) { return checkBoxStateList.get(position); } public void setAllChecked(boolean isChecked) { if(isChecked) { for(int i = 0; i < ctv.size(); i++){ ctv.get(i).setChecked(true); } }else { for(int i = 0; i < ctv.size(); i++) { ctv.get(i).setChecked(false); } } } public ArrayList<Boolean> getCheckBoxStateList() { return checkBoxStateList; } public void autoMergeSelectItems(){ MyLog.println("MergeListActivity.autoMergeSelectItems"); } }
实现效果:
全选
全不选
全选后再手动去除几个
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