ImageView点击可变暗的实例代码(android代码技巧)
废话不多说了,直接给大家贴代码了,具体代码如下所示:
importandroid.content.Context; importandroid.graphics.ColorMatrixColorFilter; importandroid.util.AttributeSet; importandroid.view.MotionEvent; importandroid.view.View; importandroid.widget.ImageView; publicclassMyImageViewextendsImageView{ publicMyImageView(Contextcontext,AttributeSetattrs){ super(context,attrs); //TODOAuto-generatedconstructorstub this.setOnTouchListener(VIEW_TOUCH_DARK); } publicstaticfinalOnTouchListenerVIEW_TOUCH_DARK=newOnTouchListener(){ //变暗(三个-50,值越大则效果越深) publicfinalfloat[]BT_SELECTED_DARK=newfloat[]{1,0,0,0,-50,0,1, 0,0,-50,0,0,1,0,-50,0,0,0,1,0}; /* //变亮 publicfinalfloat[]BT_SELECTED_LIGHT=newfloat[]{1,0,0,0,50,0,1, 0,0,50,0,0,1,0,50,0,0,0,1,0}; //恢复 publicfinalfloat[]BT_NOT_SELECTED=newfloat[]{1,0,0,0,0,0, 1,0,0,0,0,0,1,0,0,0,0,0,1,0}; */ @Override publicbooleanonTouch(Viewv,MotionEventevent){ if(event.getAction()==MotionEvent.ACTION_DOWN){ ImageViewiv=(ImageView)v; iv.setColorFilter(newColorMatrixColorFilter(BT_SELECTED_DARK)); }elseif(event.getAction()==MotionEvent.ACTION_UP){ ImageViewiv=(ImageView)v; iv.clearColorFilter(); } returnfalse;//如为false,执行ACTION_DOWN后不再往下执行 } }; }
以上所述是小编给大家介绍的ImageView点击可变暗的实例代码(android代码技巧),希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对毛票票网站的支持!