android: GridView onFling/onItemClickListener 滑动与点击事件 冲突

在使用ViewFlipper的时候，里面是两个GridView，每个GridView里面的item都有一个点击事件

如果处理不好很容易在GridView的onFling的时候就点击到他的item就同时执行了item上面的onClick事件

但是这个时候我们想要的仅仅是滑动显示另外一个GridView而已，下面是解决办法

写一个自己的GestureListener, please refer to http://stackoverflow.com/questions/4184382/how-to-implement-both-ontouch-and-also-onfling-in-a-same-listview

public class MYGestureListener extends SimpleOnGestureListener implements
OnTouchListener {

private GestureDetector gDetector;
private ViewFlipper viewFlipper;

public MYGestureListener(){
super();
}

public MYGestureListener(Context con){
this(con, null, null);
}
public MYGestureListener(Context con, GestureDetector gDetector, ViewFlipper viewFlipper){
if(null == gDetector){
gDetector = new GestureDetector(con, this);
};

this.gDetector = gDetector;
this.viewFlipper = viewFlipper;
}

@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
return super.onSingleTapConfirmed(e);
}

@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
//TODO viewFlipper.showNext()...whatever you want
return false;
}

@Override
public boolean onTouch(View v, MotionEvent event) {
return gDetector.onTouchEvent(event);
}

public GestureDetector getDector(){
return this.gDetector;
}

}

MyActivity.java

public class MyActivity extends Activity{

private Context appCon;
private ViewFlipper viewFlipper;
private MTCGestureListener gestureListener;
private GridView page1Grid;
private GridView page2Grid;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
appCon = this;
initView();
}

@Override
public boolean onTouchEvent(MotionEvent event) {
//This is the important part
return gestureListener.getDector().onTouchEvent(event);
}

private void initView(){
viewFlipper = (ViewFlipper)findViewById(R.id.viewFlipper);
page1Grid = (GridView)findViewById(R.id.iconList1);
page2Grid = (GridView)findViewById(R.id.iconList2);

SimpleAdapter adapter1 = new SimpleAdapter(this, fillMap1(),
R.layout.function_item,
new String[]{"fnImg","fnTitle"},
new int[]{R.id.fnImg, R.id.fnTitle});
page1Grid.setAdapter(adapter1);
SimpleAdapter adapter2 = new SimpleAdapter(this, fillMap2(),
R.layout.function_item,
new String[]{"fnImg","fnTitle"},
new int[]{R.id.fnImg, R.id.fnTitle});
page2Grid.setAdapter(adapter2);

initListener();
}

private void initListener(){
gestureListener = new MTCGestureListener(appCon, null, viewFlipper);

page1Grid.setOnTouchListener(gestureListener);
page2Grid.setOnTouchListener(gestureListener);
page1Grid.setOnItemClickListener(listener1);
page2Grid.setOnItemClickListener(listener2);
}

private OnItemClickListener listener1 = new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
//TODO whatever you want
}
};
private OnItemClickListener listener2 = new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
//TODO whatever you want
}

};
}