import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.TextView;
import android.widget.Toast;
public class GestureActivity extends Activity implements OnTouchListener,
OnGestureListener {
GestureDetector detector;
public GestureActivity() {
detector = new GestureDetector(this);
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView tv = (TextView) findViewById(R.id.TextView001);
//设置tv的监听器
tv.setOnTouchListener(this);
tv.setFocusable(true);
//必须,view才能够处理不同于Tap(轻触)的hold
tv.setClickable(true);
tv.setLongClickable(true);
detector.setIsLongpressEnabled(true);
}
public boolean onTouch(View v, MotionEvent event) {
return detector.onTouchEvent(event);
}
// 用户轻触触摸屏,由1个MotionEvent ACTION_DOWN触发
public boolean onDown(MotionEvent arg0) {
Log.i("MyGesture", "onDown");
Toast.makeText(this, "onDown", Toast.LENGTH_SHORT).show();
return true;
}
public void onShowPress(MotionEvent e) {
Log.i("MyGesture", "onShowPress");
Toast.makeText(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
public boolean onSingleTapUp(MotionEvent e) {
Log.i("MyGesture", "onSingleTapUp");
Toast.makeText(this, "onSingleTapUp", Toast.LENGTH_SHORT).show();
return true;
}
// 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");
// 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
// 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
final int FLING_MIN_DISTANCE = 100, FLING_MIN_VELOCITY = 200;
if (e1.getX() - e2.getX() > FLING_MIN_DISTANCE && Math.abs(velocityX) > FLING_MIN_VELOCITY) {
// Fling left
Log.i("MyGesture", "Fling left");
Toast.makeText(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(this, "Fling Right", Toast.LENGTH_SHORT).show();
} else if(e2.getY()-e1.getY()>FLING_MIN_DISTANCE && Math.abs(velocityY)>FLING_MIN_VELOCITY) {
// Fling down
Log.i("MyGesture", "Fling down");
Toast.makeText(this, "Fling down", Toast.LENGTH_SHORT).show();
} else if(e1.getY()-e2.getY()>FLING_MIN_DISTANCE && Math.abs(velocityY)>FLING_MIN_VELOCITY) {
// Fling up
Log.i("MyGesture", "Fling up");
Toast.makeText(this, "Fling up", Toast.LENGTH_SHORT).show();
}
return false;
}
// 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("MyGesture", "onScroll");
Toast.makeText(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(this, "onLongPress", Toast.LENGTH_LONG).show();
}
}