本来想通过手指的左右滑动实现Activity之间的跳转，这个通过手势识别就可以轻松的实现，但是我发现加上listview后，界面的识别就比较混乱了，找了半天
终于找到了解决办法，什么也不说，上代码。
首先整体代码。
public class MainActivity extends Activity implements OnTouchListener,OnGestureListener {
private List<Map<String, Object>> mData;
ListView listView;
LinearLayout layout;
private GestureDetector mGestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
listView=(ListView) this.findViewById(R.id.listview);
layout=(LinearLayout) this.findViewById(R.id.linearlayout);
mGestureDetector=new GestureDetector(this);
mData=getData();
MyAdapter adapter=new MyAdapter(this);
listView.setAdapter(adapter);
layout.setOnTouchListener(this);
layout.setFocusable(true);
layout.setClickable(true);
layout.setLongClickable(true);
mGestureDetector.setIsLongpressEnabled(true);
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
// TODO Auto-generated method stub
mGestureDetector.onTouchEvent(ev);
return super.dispatchTouchEvent(ev);
}
private List<Map<String, Object>> getData() {
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
Map<String, Object> map = new HashMap<String, Object>();
map.put("title", "G1");
map.put("img", R.drawable.bomb10);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G2");
map.put("img", R.drawable.bomb11);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G3");
map.put("img", R.drawable.bomb12);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G4");
map.put("img", R.drawable.bomb13);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G5");
map.put("img", R.drawable.bomb14);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G6");
map.put("img", R.drawable.bomb15);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G7");
map.put("img", R.drawable.bomb16);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G8");
map.put("img", R.drawable.bomb5);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G9");
map.put("img", R.drawable.bomb6);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G10");
map.put("img", R.drawable.bomb7);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G11");
map.put("img", R.drawable.bomb8);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G12");
map.put("img", R.drawable.bomb9);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G13");
map.put("img", R.drawable.bomb10);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G14");
map.put("img", R.drawable.bomb11);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G15");
map.put("img", R.drawable.bomb12);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G16");
map.put("img", R.drawable.bomb13);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G17");
map.put("img", R.drawable.bomb14);
list.add(map);
map = new HashMap<String, Object>();
map.put("title", "G18");
map.put("img", R.drawable.bomb15);
list.add(map);
return list;
}
// =================================================================================
//listview的adapter
public final class ViewHolder{
public ImageView img;
public TextView title;
}
public class MyAdapter extends BaseAdapter{
private LayoutInflater mInflater;
public MyAdapter(Context context){
this.mInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return mData.size();
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
holder=new ViewHolder();
convertView = mInflater.inflate(R.layout.item, null);
holder.img = (ImageView)convertView.findViewById(R.id.img);
holder.title = (TextView)convertView.findViewById(R.id.title);
convertView.setTag(holder);
}else {
holder = (ViewHolder)convertView.getTag();
}
holder.img.setBackgroundResource((Integer)mData.get(position).get("img"));
holder.title.setText((String)mData.get(position).get("title"));
return convertView;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
//============================================================================================
//手势识别部分
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
return mGestureDetector.onTouchEvent(event);
}
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
final int FLING_MIN_DISTANCE = 150, FLING_MIN_VELOCITY = 220;
//实现了左右滑动时activity之间的跳转
if (e1.getX() - e2.getX() > FLING_MIN_DISTANCE && Math.abs(velocityX) > FLING_MIN_VELOCITY) {
Toast.makeText(this, "Left", Toast.LENGTH_SHORT).show();
Intent intent=new Intent();
intent.setClass(MainActivity.this, NextActivity.class);
startActivity(intent);
} else if (e2.getX() - e1.getX() > FLING_MIN_DISTANCE && Math.abs(velocityX) > FLING_MIN_VELOCITY) {
Toast.makeText(this, "Right", Toast.LENGTH_SHORT).show();
Intent intent=new Intent();
intent.setClass(MainActivity.this, NextActivity.class);
startActivity(intent);
}
return false;
}
@Override
public void onLongPress(MotionEvent e) {
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
return true;
}
@Override
public void onShowPress(MotionEvent e) {
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
}
看完代码的同学会发现多了一个dispatchTouchEvent函数，就是这个函数完美的解决了listview和手势识别滑动之间响应冲突的问题。
具体原因可能是dispatchTouchEvent对Touch响应时间进行了分发