15 Wallpaper 之OnTouch OnIntercept dispatch事件机制

--------------------------------mian.java------------------------

package com.example.gf;


import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;


public class MainActivity extends ActionBarActivity {


private ListView lv1;
private ListView lv2;
private ListView lv3;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);


lv1 = (ListView) findViewById(R.id.lv1);
lv2 = (ListView) findViewById(R.id.lv2);
lv3 = (ListView) findViewById(R.id.lv3);


try {
lv1.setAdapter(new MyAdapter1());
lv2.setAdapter(new MyAdapter1());
lv3.setAdapter(new MyAdapter1());
} catch (Exception e) {
e.printStackTrace();
}


}


private int ids[] = new int[] { R.drawable.default1, R.drawable.girl1,
R.drawable.girl2, R.drawable.girl3 };


class MyAdapter1 extends BaseAdapter {


@Override
public int getCount() {
return 3000;
}


@Override
public Object getItem(int position) {
return position;
}


@Override
public long getItemId(int position) {
return 0;
}


@Override
public View getView(int position, View convertView, ViewGroup parent) {


ImageView iv = (ImageView) View.inflate(getApplicationContext(),
R.layout.lv_item, null);
int resId = (int) (Math.random() * 4);
iv.setImageResource(ids[resId]);
return iv;
}
}
}

-----------------------------MyLinerLayout.java----------------------

package com.example.gf;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;


public class MyLinearLayout extends LinearLayout {




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


@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
return true;
}


@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
return super.dispatchTouchEvent(ev);
}

@Override
public boolean onTouchEvent(MotionEvent event) {

int width=getWidth()/getChildCount();
int height = getHeight();
int count=getChildCount();

float eventX = event.getX();

if (eventX<width){// 滑动左边的 listView
// event.setLocation(width/2, event.getY()); 这句话没影响的，，，
getChildAt(0).dispatchTouchEvent(event);
return true;

} else if (eventX > width && eventX < 2 * width) { //滑动中间的 listView  
float eventY = event.getY();
if (eventY < height / 2) {
// event.setLocation(width / 2, event.getY());
for (int i = 0; i < count; i++) {
View child = getChildAt(i);
try {
child.dispatchTouchEvent(event);
} catch (Exception e) {
e.printStackTrace();
}

}
return true;
} else if (eventY > height / 2) {
// event.setLocation(width / 2, event.getY());
try {
getChildAt(1).dispatchTouchEvent(event);
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
}else if (eventX>2*width){
event.setLocation(width/2, event.getY());
getChildAt(2).dispatchTouchEvent(event);
return true;
}

return true;
}

}

。。。。。。。。。。。。main.xml。。。。。。。。。。。。。。

<com.example.gf.MyLinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/mll"
    tools:context=".MainActivity" >


    <ListView
        android:id="@+id/lv2"
        android:scrollbars="none"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1" />


    <ListView
        android:id="@+id/lv1"
        android:scrollbars="none"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1" />


    <ListView
        android:id="@+id/lv3"
        android:scrollbars="none"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1" />


</com.example.gf.MyLinearLayout>

。。。。。。。。。。。。。。lv_item.xml。。。。。。。。。。。。。

<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/iv"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:adjustViewBounds="true"
    android:src="@drawable/default1" />