Android OnGestureListener用法 識別使用者手勢 左右滑動

android可以識別使用者的手勢（即使用者用手指滑動的方向），通過使用者不同的手勢，從而做出不同的處理

 

 

需要使用OnGestureListener

 

比如說看電子書的時候翻頁，或者要滑動一些其他內容

 

 

直接上代碼

 

介面檔案

main.xml

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

 

主Activity

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