private class gesturelistener implements GestureDetector.OnGestureListener{
public boolean onDown(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
public void onShowPress(MotionEvent e) {
// TODO Auto-generated method stub
}
public boolean onSingleTapUp(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
public boolean onScroll(MotionEvent e1, MotionEvent e2,
float distanceX, float distanceY) {
// TODO Auto-generated method stub
return false;
}
public void onLongPress(MotionEvent e) {
// TODO Auto-generated method stub
}
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
// TODO Auto-generated method stub
return false;
}
}
GestureDetector.OnGestureListener listener = new GestureDetector.OnGestureListener(){
};
private class gestureListener implements GestureDetector.OnGestureListener{
}
public boolean onTouch(View v, MotionEvent event) {
return mGestureDetector.onTouchEvent(event);
}
TextView tv = (TextView)findViewById(R.id.tv); tv.setOnTouchListener(this);
<RelativeLayout 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" tools:context="com.example.gesturedetectorinterface.MainActivity" > <TextView android:id="@+id/tv" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_margin="50dip" android:background="#ff00ff" android:text="@string/hello_world" /> </RelativeLayout>
public class MainActivity extends Activity implements OnTouchListener{
private GestureDetector mGestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGestureDetector = new GestureDetector(new gestureListener()); //使用派生自OnGestureListener
TextView tv = (TextView)findViewById(R.id.tv);
tv.setOnTouchListener(this);
tv.setFocusable(true);
tv.setClickable(true);
tv.setLongClickable(true);
}
/*
* 在onTouch()方法中,我们调用GestureDetector的onTouchEvent()方法,将捕捉到的MotionEvent交给GestureDetector
* 来分析是否有合适的callback函数来处理用户的手势
*/
public boolean onTouch(View v, MotionEvent event) {
return mGestureDetector.onTouchEvent(event);
}
private class gestureListener implements GestureDetector.OnGestureListener{
// 用户轻触触摸屏,由1个MotionEvent ACTION_DOWN触发
public boolean onDown(MotionEvent e) {
Log.i("MyGesture", "onDown");
Toast.makeText(MainActivity.this, "onDown", Toast.LENGTH_SHORT).show();
return false;
}
/*
* 用户轻触触摸屏,尚未松开或拖动,由一个1个MotionEvent ACTION_DOWN触发
* 注意和onDown()的区别,强调的是没有松开或者拖动的状态
*
* 而onDown也是由一个MotionEventACTION_DOWN触发的,但是他没有任何限制,
* 也就是说当用户点击的时候,首先MotionEventACTION_DOWN,onDown就会执行,
* 如果在按下的瞬间没有松开或者是拖动的时候onShowPress就会执行,如果是按下的时间超过瞬间
* (这块我也不太清楚瞬间的时间差是多少,一般情况下都会执行onShowPress),拖动了,就不执行onShowPress。
*/
public void onShowPress(MotionEvent e) {
Log.i("MyGesture", "onShowPress");
Toast.makeText(MainActivity.this, "onShowPress", Toast.LENGTH_SHORT).show();
}
// 用户(轻触触摸屏后)松开,由一个1个MotionEvent ACTION_UP触发
///轻击一下屏幕,立刻抬起来,才会有这个触发
//从名子也可以看出,一次单独的轻击抬起操作,当然,如果除了Down以外还有其它操作,那就不再算是Single操作了,所以这个事件 就不再响应
public boolean onSingleTapUp(MotionEvent e) {
Log.i("MyGesture", "onSingleTapUp");
Toast.makeText(MainActivity.this, "onSingleTapUp", Toast.LENGTH_SHORT).show();
return true;
}
// 用户按下触摸屏,并拖动,由1个MotionEvent ACTION_DOWN, 多个ACTION_MOVE触发
public boolean onScroll(MotionEvent e1, MotionEvent e2,
float distanceX, float distanceY) {
Log.i("MyGesture22", "onScroll:"+(e2.getX()-e1.getX()) +" "+distanceX);
Toast.makeText(MainActivity.this, "onScroll", Toast.LENGTH_LONG).show();
return true;
}
// 用户长按触摸屏,由多个MotionEvent ACTION_DOWN触发
public void onLongPress(MotionEvent e) {
Log.i("MyGesture", "onLongPress");
Toast.makeText(MainActivity.this, "onLongPress", Toast.LENGTH_LONG).show();
}
// 用户按下触摸屏、快速移动后松开,由1个MotionEvent ACTION_DOWN, 多个ACTION_MOVE, 1个ACTION_UP触发
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
Log.i("MyGesture", "onFling");
Toast.makeText(MainActivity.this, "onFling", Toast.LENGTH_LONG).show();
return true;
}
};
}
private class gestureListener implements GestureDetector.OnGestureListener,GestureDetector.OnDoubleTapListener{
}
//构建GestureDetector实例
mGestureDetector = new GestureDetector(new gestureListener()); //使用派生自OnGestureListener
private class gestureListener implements GestureDetector.OnGestureListener{
}
//设置双击监听器
mGestureDetector.setOnDoubleTapListener(new doubleTapListener());
private class doubleTapListener implements GestureDetector.OnDoubleTapListener{
}
private class doubleTapListener implements GestureDetector.OnDoubleTapListener{
public boolean onSingleTapConfirmed(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
public boolean onDoubleTap(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
public boolean onDoubleTapEvent(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
}
public class MainActivity extends Activity implements OnTouchListener{
private GestureDetector mGestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGestureDetector = new GestureDetector(new gestureListener()); //使用派生自OnGestureListener
mGestureDetector.setOnDoubleTapListener(new doubleTapListener());
TextView tv = (TextView)findViewById(R.id.tv);
tv.setOnTouchListener(this);
tv.setFocusable(true);
tv.setClickable(true);
tv.setLongClickable(true);
}
/*
* 在onTouch()方法中,我们调用GestureDetector的onTouchEvent()方法,将捕捉到的MotionEvent交给GestureDetector
* 来分析是否有合适的callback函数来处理用户的手势
*/
public boolean onTouch(View v, MotionEvent event) {
return mGestureDetector.onTouchEvent(event);
}
//OnGestureListener监听
private class gestureListener implements GestureDetector.OnGestureListener{
public boolean onDown(MotionEvent e) {
Log.i("MyGesture", "onDown");
Toast.makeText(MainActivity.this, "onDown", Toast.LENGTH_SHORT).show();
return false;
}
public void onShowPress(MotionEvent e) {
Log.i("MyGesture", "onShowPress");
Toast.makeText(MainActivity.this, "onShowPress", Toast.LENGTH_SHORT).show();
}
public boolean onSingleTapUp(MotionEvent e) {
Log.i("MyGesture", "onSingleTapUp");
Toast.makeText(MainActivity.this, "onSingleTapUp", Toast.LENGTH_SHORT).show();
return true;
}
public boolean onScroll(MotionEvent e1, MotionEvent e2,
float distanceX, float distanceY) {
Log.i("MyGesture22", "onScroll:"+(e2.getX()-e1.getX()) +" "+distanceX);
Toast.makeText(MainActivity.this, "onScroll", Toast.LENGTH_LONG).show();
return true;
}
public void onLongPress(MotionEvent e) {
Log.i("MyGesture", "onLongPress");
Toast.makeText(MainActivity.this, "onLongPress", Toast.LENGTH_LONG).show();
}
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
Log.i("MyGesture", "onFling");
Toast.makeText(MainActivity.this, "onFling", Toast.LENGTH_LONG).show();
return true;
}
};
//OnDoubleTapListener监听
private class doubleTapListener implements GestureDetector.OnDoubleTapListener{
public boolean onSingleTapConfirmed(MotionEvent e) {
Log.i("MyGesture", "onSingleTapConfirmed");
Toast.makeText(MainActivity.this, "onSingleTapConfirmed", Toast.LENGTH_LONG).show();
return true;
}
public boolean onDoubleTap(MotionEvent e) {
Log.i("MyGesture", "onDoubleTap");
Toast.makeText(MainActivity.this, "onDoubleTap", Toast.LENGTH_LONG).show();
return true;
}
public boolean onDoubleTapEvent(MotionEvent e) {
Log.i("MyGesture", "onDoubleTapEvent");
Toast.makeText(MainActivity.this, "onDoubleTapEvent", Toast.LENGTH_LONG).show();
return true;
}
};
}
public class MainActivity extends Activity implements OnTouchListener {
private GestureDetector mGestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGestureDetector = new GestureDetector(new simpleGestureListener());
TextView tv = (TextView)findViewById(R.id.tv);
tv.setOnTouchListener(this);
tv.setFocusable(true);
tv.setClickable(true);
tv.setLongClickable(true);
}
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
return mGestureDetector.onTouchEvent(event);
}
private class simpleGestureListener extends
GestureDetector.SimpleOnGestureListener {
/*****OnGestureListener的函数*****/
public boolean onDown(MotionEvent e) {
Log.i("MyGesture", "onDown");
Toast.makeText(MainActivity.this, "onDown", Toast.LENGTH_SHORT)
.show();
return false;
}
public void onShowPress(MotionEvent e) {
Log.i("MyGesture", "onShowPress");
Toast.makeText(MainActivity.this, "onShowPress", Toast.LENGTH_SHORT)
.show();
}
public boolean onSingleTapUp(MotionEvent e) {
Log.i("MyGesture", "onSingleTapUp");
Toast.makeText(MainActivity.this, "onSingleTapUp",
Toast.LENGTH_SHORT).show();
return true;
}
public boolean onScroll(MotionEvent e1, MotionEvent e2,
float distanceX, float distanceY) {
Log.i("MyGesture", "onScroll:" + (e2.getX() - e1.getX()) + " "
+ distanceX);
Toast.makeText(MainActivity.this, "onScroll", Toast.LENGTH_LONG)
.show();
return true;
}
public void onLongPress(MotionEvent e) {
Log.i("MyGesture", "onLongPress");
Toast.makeText(MainActivity.this, "onLongPress", Toast.LENGTH_LONG)
.show();
}
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
Log.i("MyGesture", "onFling");
Toast.makeText(MainActivity.this, "onFling", Toast.LENGTH_LONG)
.show();
return true;
}
/*****OnDoubleTapListener的函数*****/
public boolean onSingleTapConfirmed(MotionEvent e) {
Log.i("MyGesture", "onSingleTapConfirmed");
Toast.makeText(MainActivity.this, "onSingleTapConfirmed",
Toast.LENGTH_LONG).show();
return true;
}
public boolean onDoubleTap(MotionEvent e) {
Log.i("MyGesture", "onDoubleTap");
Toast.makeText(MainActivity.this, "onDoubleTap", Toast.LENGTH_LONG)
.show();
return true;
}
public boolean onDoubleTapEvent(MotionEvent e) {
Log.i("MyGesture", "onDoubleTapEvent");
Toast.makeText(MainActivity.this, "onDoubleTapEvent",
Toast.LENGTH_LONG).show();
return true;
}
}
}
public class MainActivity extends Activity implements OnTouchListener {
private GestureDetector mGestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGestureDetector = new GestureDetector(new simpleGestureListener());
TextView tv = (TextView)findViewById(R.id.tv);
tv.setOnTouchListener(this);
tv.setFocusable(true);
tv.setClickable(true);
tv.setLongClickable(true);
}
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
return mGestureDetector.onTouchEvent(event);
}
private class simpleGestureListener extends
GestureDetector.SimpleOnGestureListener {
/*****OnGestureListener的函数*****/
final int FLING_MIN_DISTANCE = 100, FLING_MIN_VELOCITY = 200;
// 触发条件 :
// X轴的坐标位移大于FLING_MIN_DISTANCE,且移动速度大于FLING_MIN_VELOCITY个像素/秒
// 参数解释:
// e1:第1个ACTION_DOWN MotionEvent
// e2:最后一个ACTION_MOVE MotionEvent
// velocityX:X轴上的移动速度,像素/秒
// velocityY:Y轴上的移动速度,像素/秒
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
if (e1.getX() - e2.getX() > FLING_MIN_DISTANCE
&& Math.abs(velocityX) > FLING_MIN_VELOCITY) {
// Fling left
Log.i("MyGesture", "Fling left");
Toast.makeText(MainActivity.this, "Fling Left", Toast.LENGTH_SHORT).show();
} else if (e2.getX() - e1.getX() > FLING_MIN_DISTANCE
&& Math.abs(velocityX) > FLING_MIN_VELOCITY) {
// Fling right
Log.i("MyGesture", "Fling right");
Toast.makeText(MainActivity.this, "Fling Right", Toast.LENGTH_SHORT).show();
}
return true;
}
}
}
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