自定义组件—TabHost

package cn.madfinger.android.core.view;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;

/**
 * Tab栏 控件
 * @author wiley.wang
 */
public class TabHostView extends LinearLayout {
	private int mCount;
	private View tabViews[];
	private int mSelected = -1;

	public TabHostView(Context context) {
		super(context);
	}

	public TabHostView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	@Override
	protected void onFinishInflate() {
		mCount = this.getChildCount();
		tabViews = new View[mCount];
		for (int i = 0; i < mCount; i++) {
			tabViews[i] = this.getChildAt(i);
			tabViews[i].setOnClickListener(clickEvent);
		}
	}

	private View.OnClickListener clickEvent = new OnClickListener() {
		@Override
		public void onClick(View v) {
			int index = -1;
			for (int i = 0; i < mCount; i++) {
				if (tabViews[i] == v) {
					index = i;
					break;
				}
			}
			if (null == onTabChangedListener)
				return;
			if (onTabChangedListener.onClick(index)) {// 执行回调事件
				setFocus(index);// 回调成功后切换焦点
			}
		}

	};
	
	public void onClickTab(int index) {
		if(index<0&&index>=mCount)return;
		if(onTabChangedListener.onClick(index)) {
			setFocus(index);
		}
	}

	private void setFocus(int index) {
		if (index >= mCount || index == mSelected)
			return;

		if (mSelected > -1) {
			if (tabViews[mSelected] instanceof ViewGroup) {
				ViewGroup group = ((ViewGroup) tabViews[mSelected]);
				int childCount = group.getChildCount();
				for (int i = 0; i < childCount; i++) {
					group.getChildAt(i).setSelected(false);
				}
			} else {
				tabViews[mSelected].setSelected(false);
			}
		}

		View tabView = tabViews[index];
		if (tabView instanceof ViewGroup) {
			ViewGroup group = ((ViewGroup) tabView);
			int childCount = group.getChildCount();
			for (int i = 0; i < childCount; i++) {
				group.getChildAt(i).setSelected(true);
			}
		} else {
			tabView.setSelected(true);
		}
		mSelected = index;
	}

	private onTabChangedListener onTabChangedListener;

	public void setOnTabChangedListener(onTabChangedListener l) {
		onTabChangedListener = l;
	}

	public interface onTabChangedListener {
		boolean onClick(int index);
	}

}

 

<?xml version="1.0" encoding="utf-8"?>
<!--  -->
<cn.madfinger.android.core.view.TabHostView
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="horizontal"
	android:layout_height="60dip" 
	android:layout_width="fill_parent"	
	>

	<RelativeLayout android:id="@+id/layout1"
		android:layout_width="fill_parent" 
		android:layout_height="fill_parent" 
		android:layout_weight="1.0"
		android:layout_gravity="center_vertical"
		android:layout_margin="2dip"
		>
		<ImageView android:id="@+id/tab1"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content" 
			android:src="@drawable/icon"
			android:layout_centerInParent="true"
			/>
	</RelativeLayout>
    
	<RelativeLayout android:id="@+id/layout2"
		android:layout_width="fill_parent" 
		android:layout_height="fill_parent" 
		android:layout_weight="1.0"
		android:layout_gravity="center_vertical"
		android:layout_margin="2dip"
		>
		<ImageView android:id="@+id/tab2"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content" 
			android:src="@drawable/icon"
			android:layout_centerInParent="true"
			/>
	</RelativeLayout>
    
	<RelativeLayout android:id="@+id/layout3"
		android:layout_width="fill_parent" 
		android:layout_height="fill_parent" 
		android:layout_weight="1.0"
		android:layout_gravity="center_vertical"
		android:layout_margin="2dip"
		>
		<ImageView android:id="@+id/tab3"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content" 
			android:src="@drawable/icon"
			android:layout_centerInParent="true"
			/>
	</RelativeLayout>
    
	<RelativeLayout android:id="@+id/layout4"
		android:layout_width="fill_parent" 
		android:layout_height="fill_parent" 
		android:layout_weight="1.0"
		android:layout_gravity="center_vertical"
		android:layout_margin="2dip"
		>
		<ImageView android:id="@+id/tab4"
			android:layout_width="wrap_content" 
			android:layout_height="wrap_content" 
			android:src="@drawable/icon"
			android:layout_centerInParent="true"
			/>
	</RelativeLayout>
    
</cn.madfinger.android.core.view.TabHostView>

 

package cn.company.android.project.ui;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Window;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Toast;
import android.widget.ViewFlipper;
import cn.company.android.project.R;
import cn.company.android.project.util.Constants;
import cn.madfinger.android.core.view.TabHostView;

public class MainActivity extends Activity {
	/** Called when the activity is first created. */
	private static String TAG = MainActivity.class.getSimpleName();
	private Context mContext=null;
	private MyApplication mApplication = null;
	private TabHostView mTabHost = null;
	private ViewFlipper mViewFlipper = null;

	private Animation mInLeftAnim;
	private Animation mOutLeftAnim;
	private Animation mInRightAnim;
	private Animation mOutRightAnim;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.main);
		mApplication = (MyApplication) this.getApplication();
		mContext=this;
		initCtrl();

		
	}

	private void initCtrl() {
		//初始化TabHost
		mTabHost = (TabHostView) findViewById(R.id.tabhost);
		mTabHost.setOnTabChangedListener(onTabChangedListener);
		
		//初始化ViewFlipper
		mViewFlipper = (ViewFlipper) findViewById(R.id.viewflipper);
		
		//初始化按钮
		
		// 初始化动画
		mInLeftAnim = AnimationUtils.loadAnimation(this, R.anim.anim_in_left);
		mOutLeftAnim = AnimationUtils.loadAnimation(this, R.anim.anim_out_left);
		mInRightAnim = AnimationUtils.loadAnimation(this, R.anim.anim_in_right);
		mOutRightAnim = AnimationUtils.loadAnimation(this,
				R.anim.anim_out_right);
	}

	//切换TAB
	public void setFocusTab(int index) {
		mTabHost.onClickTab(index);
	}

	TabHostView.onTabChangedListener onTabChangedListener = new TabHostView.onTabChangedListener() {
		@Override
		public boolean onClick(int index) {//tabIndex
			Toast.makeText(mContext, ""+index, Toast.LENGTH_SHORT).show();
			return true;
		}
	};

	// 切换切图时动画效果
	public void changeViewAnimation(int index, boolean anim) {

	}

	@Override
	protected void onResume() {
		super.onResume();

	}

	// 切回Activity时执行
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		if (resultCode == RESULT_OK) {
			int funId = data.getIntExtra(Constants.FUNCTION_KEY, 0);
			Log.d(TAG, "onActivityResult:RESULT_OK");
			Log.d(TAG, "FUNCTION:" + funId);
			switch (funId) {
			case Constants.FUNCTION_1:

				break;
			case Constants.FUNCTION_2:

				break;
			case Constants.FUNCTION_3:

				break;
			}
		}
		super.onActivityResult(requestCode, resultCode, data);
	}

	// 按键时执行
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		// 实现按健监听
		if (keyCode == KeyEvent.KEYCODE_BACK) {
			new AlertDialog.Builder(this).setTitle("确认退出吗？").setIcon(
					android.R.drawable.ic_menu_help).setCancelable(false)
					.setPositiveButton("确定",
							new DialogInterface.OnClickListener() {
								@Override
								public void onClick(DialogInterface dialog,
										int which) {
									// 退出
									finish(); //
									System.exit(0);
								}
							}).setNegativeButton("取消",
							new DialogInterface.OnClickListener() {
								@Override
								public void onClick(DialogInterface dialog,
										int which) {
								}
							}).show();
			return true;
		}
		return super.onKeyDown(keyCode, event);
	}
}