android使用gesturedetector手势识别示例分享

public class mygesturelintener extends simpleongesturelistener {
private context context;
public mygesturelintener(context context) {
    super();
    this.context = context;
}

// 单击，触摸屏按下时立刻触发
/*@override
public boolean ondown(motionevent e) {
    // todo auto-generated method stub
    toast.maketext(context, "down " + e.getaction(), toast.length_short)
        .show();
    return true;
}*/
// 双击，手指在触摸屏上迅速点击第二下时触发
@override
public boolean ondoubletap(motionevent e) {
    // todo auto-generated method stub
    return super.ondoubletap(e);
}

// 双击的按下跟抬起各触发一次
@override
public boolean ondoubletapevent(motionevent e) {
    // todo auto-generated method stub
    return super.ondoubletapevent(e);
}

 

// 滑动，触摸屏按下后快速移动并抬起，会先触发滚动手势，跟着触发一个滑动手势
@override
public boolean onfling(motionevent e1, motionevent e2, float velocityx,
        float velocityy) {
    // todo auto-generated method stub
    return super.onfling(e1, e2, velocityx, velocityy);
}

// 长按，触摸屏按下后既不抬起也不移动，过一段时间后触发
@override
public void onlongpress(motionevent e) {
    // todo auto-generated method stub
    toast.maketext(context, "long " + e.getaction(), toast.length_short)
            .show();
}

// 滚动，触摸屏按下后移动
@override
public boolean onscroll(motionevent e1, motionevent e2, float distancex,
        float distancey) {
    toast.maketext(context, "onscroll " + e2.getaction(), toast.length_short)
    .show();
    return true;
}

// 短按，触摸屏按下后片刻后抬起，会触发这个手势，如果迅速抬起则不会
@override
public void onshowpress(motionevent e) {
    // todo auto-generated method stub
    toast.maketext(context, "show " + e.getaction(), toast.length_short)
            .show();

}

// 单击确认，即很快的按下并抬起，但并不连续点击第二下
/*@override
public boolean onsingletapconfirmed(motionevent e) {
    // todo auto-generated method stub
    toast.maketext(context, "onsingletapconfirmed " + e.getaction(), toast.length_short)
    .show();
    return true;
}*/

// 抬起，手指离开触摸屏时触发(长按、滚动、滑动时，不会触发这个手势)
/*@override
public boolean onsingletapup(motionevent e) {
    // todo auto-generated method stub

    toast.maketext(context, "onsingletapup " + e.getaction(), toast.length_short)
    .show();
    return true;
}*/
public class mainactivity extends activity {
private gesturedetector mgesturedetector;//手势对象
private mygesturelintener mygesturelintener;//手势监听的接口对象

@override
protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    mygesturelintener = new mygesturelintener(this);

    //手势对象的构造方法
    mgesturedetector = new gesturedetector(this,
            mygesturelintener);
}

/**gesturedetector类的ontouchevent方法用来辨别不同的手势*/
@override
public boolean ontouchevent(motionevent event) {
    boolean b = false;
    int i = event.getaction();
    int j = motionevent.action_move;
    system.out.println(i+"<----------------->"+j);
    b = mgesturedetector.ontouchevent(event);
    if (b) {
        intent in = new intent();
        in.setclass(this, testactivity.class);
        startactivity(in);
    }
    return b;

}

@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;
}
}