阿权的书房

/*
* 原代码
*/
//    public void onItemSelected(AdapterView parent, View v, int position, long id) {
//      mSwitcher.setImageResource(mImageIds[position]);
//    }

/*
* code: hqlulu
* http://www.aslibra.com
* 增加以下代码
*/
private int showingIndex = -1;
private static final int TIME_OUT_DISPLAY = 300;
private int toShowIndex = 0;

@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
  Log.v("test", "onItemSelected arg2="+arg2+" arg3="+arg3);

  toShowIndex = arg2;
  final Handler handler = new Handler() {  
    public void handleMessage(Message msg) {
      if(showingIndex != toShowIndex){
        showingIndex = toShowIndex;
        mSwitcher.setImageResource(mImageIds[toShowIndex]);          
      }
    }  
  };
  Thread checkChange = new Thread() {    
    public void run() {
      int myIndex = toShowIndex;
      try {
        sleep( TIME_OUT_DISPLAY );
        if( myIndex == toShowIndex ){
          handler.sendEmptyMessage(0);  
          Log.v("test", "+++ stable can show ...");
        }else{
          Log.v("test", "+++ not stable...");
        }
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
    }  
  };
  checkChange.start();
}

package com.aslibra.test;

import android.app.Activity;
import android.graphics.Rect;
import android.os.Bundle;
import android.util.Log;
import android.view.Window;
import android.widget.ImageView;

public class test extends Activity {
  ImageView iv;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    iv = (ImageView) this.findViewById(R.id.ImageView01);
    iv.post(new Runnable()
    {
      public void run()
      {
        viewInited();
      }
    }
    );
    Log.v("test", "== ok ==");
  }

  private void viewInited(){
    Rect rect= new Rect();
    Window window= getWindow();
    iv.getWindowVisibleDisplayFrame(rect);
    int statusBarHeight= rect.top;
    int contentViewTop= window.findViewById(Window.ID_ANDROID_CONTENT).getTop();
    int titleBarHeight= contentViewTop - statusBarHeight;
    //测试结果：ok之后 100多 ms 才运行了
    Log.v("test", "=-init-= statusBarHeight="+statusBarHeight+
        " contentViewTop="+contentViewTop+
        " titleBarHeight="+titleBarHeight);    
  }
  
  /*
   * 07-14 02:36:48.449: VERBOSE/test(1385): == ok ==
   * 07-14 02:36:48.558: VERBOSE/test(1385): =-init-= statusBarHeight=25 contentViewTop=50 titleBarHeight=25
   */
}

package com.aslibra.test;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.GestureDetector.OnGestureListener;
import android.widget.LinearLayout;
import android.widget.TextView;

/*
* 自定义双击等待时间
* http://www.aslibra.com/blog/post/android_doubleClick.php
*/
public class touchGesture extends Activity implements OnGestureListener {      
  private LinearLayout main;      
  private TextView viewA;
  private boolean waitDoubleClick = false;
  private static final int DOUBLE_CLICK_TIME = 350;

  private GestureDetector gestureScanner;

  @Override  
  public void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  

    gestureScanner = new GestureDetector(this);  

    main = new LinearLayout(this);  
    main.setBackgroundColor(Color.GRAY);
    main.setLayoutParams(new LinearLayout.LayoutParams(320,480));
    main.setOrientation(LinearLayout.VERTICAL);

    viewA = new TextView(this);
    viewA.setBackgroundColor(Color.YELLOW);
    viewA.setTextColor(Color.BLACK);  
    viewA.setTextSize(16);
    viewA.setLayoutParams(new LinearLayout.LayoutParams(320,50));  
    main.addView(viewA);

    setContentView(main);  
  }

  @Override  
  public boolean onTouchEvent(MotionEvent me) {  
    return gestureScanner.onTouchEvent(me);  
  }  

  @Override  
  public boolean onDown(MotionEvent e) {  
    //viewA.setText("-" + "DOWN" + "-");  
    return true;  
  }  

  @Override  
  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {  
    //viewA.setText("-" + "FLING" + "- "+velocityX + "- "+velocityY);  
    Log.v("test", "onFling "+e1.getX()+" "+e2.getX());
    return true;  
  }  

  @Override  
  public void onLongPress(MotionEvent e) {  
    //viewA.setText("-" + "LONG PRESS" + "-");  
  }  

  @Override  
  public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {  
    //viewA.setText("-" + "SCROLL" + "- "+distanceX + "- "+distanceY);  
    Log.v("test", "onScroll "+e1.getX()+" "+e2.getX());
    return true;  
  }  

  @Override  
  public void onShowPress(MotionEvent e) {  
    //viewA.setText("-" + "SHOW PRESS" + "-");  
  }

  @Override  
  public boolean onSingleTapUp(MotionEvent e) {  
    //viewA.setText("-" + "SINGLE TAP UP" + "-"+ i++);  
    Log.v("test", "onSingleTapUp "+e.getX()+" "+e.getY());
    if(!waitDoubleClick){
      waitDoubleClick = true;
      Log.v("test", "waitDoubleClick");
      //等待下次点击
      Thread checkUpdate = new Thread() {    
        public void run() {
          //固定时间后如果还没有改变状态，说明是单击，取消等待状态
          try {
            sleep( DOUBLE_CLICK_TIME );
            if(waitDoubleClick){
              waitDoubleClick = false;
              Log.v("test", "cancle waitDoubleClick");
            }
          } catch (InterruptedException e) {
            e.printStackTrace();
          }
        }  
      };
      checkUpdate.start();  
      viewA.setText("");
    }else{
      //双击
      waitDoubleClick = false;
      onDoubleClick();
    }
    return true;  
  }  

  //双击事件
  private void onDoubleClick(){
    viewA.setText("dobule click");
    Log.v("test", "DoubleClick");      
  }
  
  
}

package com.aslibra.test;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.GestureDetector.OnGestureListener;
import android.widget.LinearLayout;
import android.widget.TextView;

public class touchGesture extends Activity implements OnGestureListener {      
  private LinearLayout main;      
  private TextView viewA;
  private GestureDetector gestureScanner;

  @Override  
  public void onCreate(Bundle savedInstanceState) {  
    super.onCreate(savedInstanceState);  

    gestureScanner = new GestureDetector(this);  
    gestureScanner.setOnDoubleTapListener(new GestureDetector.OnDoubleTapListener(){  
      public boolean onDoubleTap(MotionEvent e) {  
        viewA.setText("-" + "onDoubleTap" + "-");  
        //双击时产生一次
        Log.v("test", "onDoubleTap");
        return false;  
      }
      public boolean onDoubleTapEvent(MotionEvent e) {  
        //双击时产生两次
        Log.v("test", "onDoubleTapEvent");
        return false;
      }  
      public boolean onSingleTapConfirmed(MotionEvent e) {  
        viewA.setText("-" + "onSingleTapConfirmed" + "-");  
        //短快的点击算一次单击
        Log.v("test", "onSingleTapConfirmed");
        return false;  
      }  
    });


    main = new LinearLayout(this);  
    main.setBackgroundColor(Color.GRAY);
    main.setLayoutParams(new LinearLayout.LayoutParams(320,480));
    main.setOrientation(LinearLayout.VERTICAL);

    viewA = new TextView(this);
    viewA.setBackgroundColor(Color.YELLOW);
    viewA.setTextColor(Color.BLACK);  
    viewA.setTextSize(16);
    viewA.setLayoutParams(new LinearLayout.LayoutParams(320,50));  
    main.addView(viewA);

    setContentView(main);  
  }

  @Override  
  public boolean onTouchEvent(MotionEvent me) {  
    return gestureScanner.onTouchEvent(me);  
  }  

  @Override  
  public boolean onDown(MotionEvent e) {  
    //viewA.setText("-" + "DOWN" + "-");  
    return true;  
  }  

  @Override  
  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {  
    //viewA.setText("-" + "FLING" + "- "+velocityX + "- "+velocityY);  
    Log.v("test", "onFling "+e1.getX()+" "+e2.getX());
    return true;  
  }  

  @Override  
  public void onLongPress(MotionEvent e) {  
    //viewA.setText("-" + "LONG PRESS" + "-");  
  }  

  @Override  
  public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {  
    //viewA.setText("-" + "SCROLL" + "- "+distanceX + "- "+distanceY);  
    Log.v("test", "onScroll "+e1.getX()+" "+e2.getX());
    return true;  
  }  

  @Override  
  public void onShowPress(MotionEvent e) {  
    //viewA.setText("-" + "SHOW PRESS" + "-");  
  }

  @Override  
  public boolean onSingleTapUp(MotionEvent e) {  
    Log.v("test", "onSingleTapUp");
    //viewA.setText("-" + "SINGLE TAP UP" + "-"+ i++);  
    return true;  
  }  
  
}