Android(安卓)OnGestureListener用法识别用户手势左右滑动

android可以识别用户的手势（即用户用手指滑动的方向），通过用户不同的手势，从而做出不同的处理

需要使用OnGestureListener

比如说看电子书的时候翻页，或者要滑动一些其他内容

直接上代码

界面文件

main.xml

view plain copy to clipboard print ?

<?xml version="1.0" encoding="utf-8"?>
"http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/ll"
>
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>

<?xml version="1.0" encoding="utf-8"?>

主Activity

view plain copy to clipboard print ?

package zy.lucifer.testGesture;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.OnGestureListener;
import android.view.View.OnTouchListener;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
public class testGesture extends Activity implements OnTouchListener,
OnGestureListener {
GestureDetector mGestureDetector;
private static final int FLING_MIN_DISTANCE = 50;
private static final int FLING_MIN_VELOCITY = 0;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mGestureDetector = new GestureDetector(this);
LinearLayout ll=(LinearLayout)findViewById(R.id.ll);
ll.setOnTouchListener(this);
ll.setLongClickable(true);
}
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
Log.i("touch","touch");
return mGestureDetector.onTouchEvent(event);
}
@Override
public boolean onDown(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
// TODO Auto-generated method stub
if (e1.getX()-e2.getX() > FLING_MIN_DISTANCE
&& Math.abs(velocityX) > FLING_MIN_VELOCITY) {
// Fling left
Toast.makeText(this, "向左手势", Toast.LENGTH_SHORT).show();
} else if (e2.getX()-e1.getX() > FLING_MIN_DISTANCE
&& Math.abs(velocityX) > FLING_MIN_VELOCITY) {
// Fling right
Toast.makeText(this, "向右手势", Toast.LENGTH_SHORT).show();
}
return false;
}
@Override
public void onLongPress(MotionEvent e) {
// TODO Auto-generated method stub
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onShowPress(MotionEvent e) {
// TODO Auto-generated method stub
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
// TODO Auto-generated method stub
return false;
}
}

更多相关文章

随机推荐

Android(安卓)OnGestureListener用法 识别用户手势 左右滑动

更多相关文章

随机推荐

Android(安卓)OnGestureListener用法识别用户手势左右滑动