要實現滑屏等觸發事件，視情況而定；

如果實現的觸屏或者手勢效果較多，則使用第一種方法，實現OnGestureListener 接口（參考OnGestureListener）；

如果只是實現較少的效果，則考慮使用SimpleOnGestureListener（參考SimpleOnGestureListenter）;主要分為以下三步：

第一種方法：

1、繼承OnTouchListener , OnGestureListener ；

//繼承OnTouchListener,OnGestureListener public class MainActivity extends Activity implements OnTouchListener,OnGestureListener{

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注：此處使用的OnGestureListener來自包 android.view.GestureDetector.OnGestureListener;而不是 android.gesture.GestureOverlayView.OnGestureListener;

2、初始化OnGestureListener ，即注冊手勢監聽 ；獲得當前接受操作的布局id ； 注冊觸屏監聽；

//手勢監聽 mGestureDetector = new GestureDetector(MainActivity.this,(OnGestureListener) this);//(OnGestureListener) 可以省略 //獲得當前接受操作的布局id RelativeLayout mActivity = (RelativeLayout)findViewById(R.id.main_activity); //觸屏監聽 mActivity.setOnTouchListener(this); mActivity.setLongClickable(true);

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3、重載onFling()和onTouch();

public boolean onTouch(View v, MotionEvent event) {return mGestureDetector.onTouchEvent(event); }public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {//省略 }

第二種方法如下：

1、繼承OnTouchListener? ；

//繼承OnTouchListener public class MainActivity extends Activity implements OnTouchListener{

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2、初始化OnGestureListener ，即注冊手勢監聽 ；獲得當前接受操作的布局id ； 注冊觸屏監聽；

//手勢監聽 mGestureDetector = new GestureDetector(MainActivity.this,new MySimpleOnGestureListener());//下邊定義MySimpleOnGestureListener,//并使其繼承SimpleOnGestureListener類 //獲得當前接受操作的布局id RelativeLayout mActivity = (RelativeLayout)findViewById(R.id.main_activity); //觸屏監聽 mActivity.setOnTouchListener(this); mActivity.setLongClickable(true);

3、定義SimpleOnGestureListener子類，并重載onTouch()和所需方法;

class MySimpleGestureListener extends SimpleOnGestureListener{@Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {//大于設定的最小滑動距離并且在水平/豎直方向速度絕對值大于設定的最小速度，則執行相應方法if(e1.getX()-e2.getX() > verticalMinistance && Math.abs(velocityX) > minVelocity){Toast.makeText(MainActivity.this, "turn left", Toast.LENGTH_SHORT).show();}else if(e2.getX() - e1.getX() > verticalMinistance && Math.abs(velocityX) > minVelocity){Toast.makeText(MainActivity.this, "turn right", Toast.LENGTH_SHORT).show();}else if(e1.getY()-e2.getY() > 20 && Math.abs(velocityY) > 10){Toast.makeText(MainActivity.this, "turn up", Toast.LENGTH_SHORT).show();}else if(e2.getY()-e1.getY() > 20 && Math.abs(velocityY) > 10){Toast.makeText(MainActivity.this, "turn down", Toast.LENGTH_SHORT).show();}return false;}@Overridepublic boolean onDown(MotionEvent e){Toast.makeText(MainActivity.this, "onDown", Toast.LENGTH_SHORT).show();return false;}}

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具體代碼如下：

（第一種方法）

import android.app.Activity; import android.content.Intent;import android.os.Bundle; import android.util.Log; import android.view.GestureDetector; import android.view.GestureDetector.OnGestureListener; import android.view.GestureDetector.SimpleOnGestureListener; import android.view.Menu; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.*;public class MainActivity extends Activity implements OnTouchListener,OnGestureListener{private static final String tag = "mainActivity";private GestureDetector mGestureDetector;private int verticalMinistance = 20; //水平最小識別距離private int minVelocity = 10; //最小識別速度@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//手勢監聽mGestureDetector = new GestureDetector(MainActivity.this,(OnGestureListener) this);//(OnGestureListener) 可以省略//獲得當前接受操作的布局idRelativeLayout mActivity = (RelativeLayout)findViewById(R.id.main_activity);//觸屏監聽mActivity.setOnTouchListener(this);mActivity.setLongClickable(true);}@Overridepublic 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;}@Overridepublic boolean onTouch(View v, MotionEvent event) {return mGestureDetector.onTouchEvent(event);}public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {//大于設定的最小滑動距離并且在水平/豎直方向速度絕對值大于設定的最小速度，則執行相應方法if(e1.getX()-e2.getX() > verticalMinistance && Math.abs(velocityX) > minVelocity){//在此處實現跳轉//Intent intent = new Intent(MainActivity.this,nextActivity.class);//startActivity(intent);Toast.makeText(MainActivity.this, "turn left", Toast.LENGTH_SHORT).show();}else if(e2.getX() - e1.getX() > verticalMinistance && Math.abs(velocityX) > minVelocity){Toast.makeText(MainActivity.this, "turn right", Toast.LENGTH_SHORT).show();}else if(e1.getY()-e2.getY() > 20 && Math.abs(velocityY) > 10){Toast.makeText(MainActivity.this, "turn up", Toast.LENGTH_SHORT).show();}else if(e2.getY()-e1.getY() > 20 && Math.abs(velocityY) > 10){Toast.makeText(MainActivity.this, "turn down", Toast.LENGTH_SHORT).show();}return false;}//只要有觸發就會調用次方法@Overridepublic boolean onDown(MotionEvent e) {Toast.makeText(MainActivity.this, "onDown", Toast.LENGTH_SHORT).show();return false;}@Overridepublic void onLongPress(MotionEvent e) {Toast.makeText(MainActivity.this, "onLongPress", Toast.LENGTH_SHORT).show();}@Overridepublic boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {// Toast.makeText(MainActivity.this, "onScroll", Toast.LENGTH_SHORT).show();return false;}@Overridepublic void onShowPress(MotionEvent e) { // Toast.makeText(MainActivity.this, "onShowPress", Toast.LENGTH_SHORT).show();}@Overridepublic boolean onSingleTapUp(MotionEvent e) { // Toast.makeText(MainActivity.this, "onsingleTapup", Toast.LENGTH_SHORT).show();return false;} }

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（第二種方法）

import android.app.Activity; import android.content.Intent;import android.os.Bundle; import android.util.Log; import android.view.GestureDetector; import android.view.GestureDetector.OnGestureListener; import android.view.GestureDetector.SimpleOnGestureListener; import android.view.Menu; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.*;public class MainActivity extends Activity implements OnTouchListener{private static final String tag = "mainActivity";private GestureDetector mGestureDetector;private int verticalMinistance = 20; //水平最小識別距離private int minVelocity = 10; //最小識別速度@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//手勢監聽mGestureDetector = new GestureDetector(MainActivity.this,new LearnGestureListener());//獲得當前接受操作的布局idRelativeLayout mActivity = (RelativeLayout)findViewById(R.id.main_activity);//觸屏監聽mActivity.setOnTouchListener(this);mActivity.setLongClickable(true);}@Overridepublic 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;}@Overridepublic boolean onTouch(View v, MotionEvent event) {return mGestureDetector.onTouchEvent(event);}class LearnGestureListener extends SimpleOnGestureListener{@Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {//大于設定的最小滑動距離并且在水平/豎直方向速度絕對值大于設定的最小速度，則執行相應方法if(e1.getX()-e2.getX() > verticalMinistance && Math.abs(velocityX) > minVelocity){Toast.makeText(MainActivity.this, "turn left", Toast.LENGTH_SHORT).show();}else if(e2.getX() - e1.getX() > verticalMinistance && Math.abs(velocityX) > minVelocity){Toast.makeText(MainActivity.this, "turn right", Toast.LENGTH_SHORT).show();}else if(e1.getY()-e2.getY() > 20 && Math.abs(velocityY) > 10){Toast.makeText(MainActivity.this, "turn up", Toast.LENGTH_SHORT).show();}else if(e2.getY()-e1.getY() > 20 && Math.abs(velocityY) > 10){Toast.makeText(MainActivity.this, "turn down", Toast.LENGTH_SHORT).show();}return false;}@Overridepublic boolean onDown(MotionEvent e){Toast.makeText(MainActivity.this, "onDown", Toast.LENGTH_SHORT).show();return false;}}}

轉載于:https://www.cnblogs.com/jiangu66/p/3202732.html

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