android 手勢操作GestureDetector

標籤：android   android開發   

package com.sphere.gesturetest;import android.os.Bundle;import android.app.Activity;import android.view.GestureDetector;import android.view.GestureDetector.OnGestureListener;import android.view.Menu;import android.view.MotionEvent;import android.widget.Toast;public class MainActivity extends Activity implements OnGestureListener{    GestureDetector gestureDetector;    private int MIN_DESTANCE = 50;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        gestureDetector = new GestureDetector(this,this);    }    @Override    public 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;    }        @Override    public boolean onTouchEvent(MotionEvent event) {        //交給手勢檢測類處理touch事件        return gestureDetector.onTouchEvent(event);    }    //使用者按下時觸發    @Override    public boolean onDown(MotionEvent arg0) {        // TODO Auto-generated method stub        toast("按下");        return false;    }    //使用者在螢幕上拖動時觸發    @Override    public boolean onFling(MotionEvent arg0, MotionEvent arg1, float arg2,            float arg3) {        // TODO Auto-generated method stub        if(arg0.getX() - arg1.getX() > MIN_DESTANCE){            toast("向左滑");        }        if(arg0.getX() - arg1.getX() < MIN_DESTANCE){            toast("向右滑");        }        return false;    }    @Override    public void onLongPress(MotionEvent arg0) {        // TODO Auto-generated method stub        toast("長按");    }    @Override    public boolean onScroll(MotionEvent arg0, MotionEvent arg1, float arg2,            float arg3) {        // TODO Auto-generated method stub        //toast("滾動。。。。");        return false;    }    //當使用者在螢幕上按下 而且還未移動和鬆開時觸發    @Override    public void onShowPress(MotionEvent arg0) {        // TODO Auto-generated method stub        toast("onShowPress。。。。");    }    //使用者在觸控螢幕上輕擊事件將會觸發    @Override    public boolean onSingleTapUp(MotionEvent arg0) {        // TODO Auto-generated method stub        toast("onSingleTapUp。。。。");        return false;    }        public void toast(String text){        Toast.makeText(this, text, Toast.LENGTH_SHORT).show();    }}

其他精彩文章文章

在 android dialog中使用Autocompletetext 
大型網站架構設計-Solr
mysql雜湊索引
android學習筆記（32）網格視圖（GridView )和圖形切換器（ImageSwi...
android學習筆記（31）可展開的列表組件（ExpandableListView )

更多關於android開發文章

android 手勢操作GestureDetector