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1、使用Button时为了让用户有“按下啲效果，有两种实现方式：1. JAVA代码实现：imageButton.setOnTouchListener(new OnTouchListener()Override public boolean onTouch(View v, MotionEvent event) if(eventgetAction()=MotionEventACTION_DOWN)更改为按下时的背景图片v.setBackgroundResource(R drawable .pressed);else if(eventgetAction()=MotionEventACTION_UP)改为
2、抬起时的图片 v.setBackgroundResource(R drawable .released)return false;);2. XML实现： vitemandroid:drawable=drawable/button_add /这个文件放在drawable目录下面。命名为button_add_x.xml,使用方法如下:vImageButtonandroid:id=+id/ImageButton android:layout_width=wrap_content android:layout_height=wrap_content android:background=#000000
3、00 android:src=drawable/button_add_x vImageButtonandroid:id=+id/ImageButton android:layout_width=wrap_content android:layout_height=wrap_content android:background=#00000000 android:src=drawable/button_add_x 3采用Drawable的颜色过滤：*按下这个按钮进行的颜色过滤*/public final static float BT_SELECTED=new float 2, 0, 0, 0,
4、 2,0, 2, 0, 0, 2,0, 0, 2, 0, 2,0, 0, 0, 1, 0 ;*按钮恢复原状的颜色过滤*/public final static float BT_NOT_SELECTED=new float 1, 0, 0, 0, 0,0, 1, 0, 0, 0,0, 0, 1, 0, 0,0, 0, 0, 1, 0 ;*按钮焦点改变 */public final static OnFocusChangeListenerbuttonOnFocusChangeListener=new OnFocusChangeListener。Overridepublic void onFocu
5、sChange(View v, boolean hasFocus) if (hasFocus) v.getBackgroundOsetColorFilter(new ColorMatrixColorFilter(BT_SELECTED); v.setBackgroundDrawable(v.getBackgroundO);elsev.getBackground().setColorFilter(new ColorMatrixColorFilter(BT_NOT_SELECTED);v.setBackgroundDrawable(v.getBackgroundO);/*按钮触碰按下效果*/pub
6、lic final static OnTouchListener buttonOnTouchListener=new OnTouchListenerO Overridepublic boolean onTouch(View v, MotionEvent event) if(event getAction() = MotionEvent.ACTION_DOWN) v.getBackground().setColorFilter(newColorMatrixColorFilter(BT_SELECTED); v.setBackgroundDrawable(v.getBackground();els
7、e if(event.getAction() = MotionEvent.ACTION_UP) v.getBackgroundO.setColorFilter(newColorMatrixColorFilter(BT_NOT_SELECTED); v.setBackgroundDrawable(v.getBackground();return false;/*设置图片按钮获取焦点改变状态* param inImageButton*/public final static void setButtonFocusChanged(View inView)inView.setOnTouchListen
8、er(buttonOnTouchListener);inView.setOnFocusChangeListener(buttonOnFocusChangeListener);/*按下这个按钮进行的颜色过滤 */public final static float BT_SELECTED=new float 2, 0, 0, 0, 2,0, 2, 0, 0, 2,0, 0, 2, 0, 2,0, 0, 0, 1, 0 ;*按钮恢复原状的颜色过滤*/public final static float BT_NOT_SELECTED=new float 1, 0, 0, 0, 0,0, 1, 0, 0
9、, 0,0, 0, 1, 0, 0,0, 0, 0, 1, 0 ;/*按钮焦点改变*/public final static OnFocusChangeListener buttonOnFocusChangeListener=new OnFocusChangeListener。Overridepublic void onFocusChange(View v, boolean hasFocus) if (hasFocus) v.getBackground()setColorFilter(newColorMatrixColorFilter(BT_SELECTED);v.setBackgroundD
10、rawable(v.getBackground();elsev.getBackground().setColorFilter(new ColorMatrixColorFilter(BT_NOT_SELECTED);v.setBackgroundDrawable(v.getBackground();*按钮触碰按下效果*/public final static OnTouchListener buttonOnTouchListener=new OnTouchListenerO Overridepublic boolean onTouch(View v, MotionEvent event) if(
11、event getAction() = MotionEventACTION_DOWN) v.getBackground()setColorFilter(new ColorMatrixColorFilter(BT_SELECTED);v.setBackgroundDrawable(v.getBackgroundO)；else if(event.getAction() = MotionEvent.ACTION_UP) v.getBackgroundO.setColorFilter(new ColorMatrixColorFilter(BT_NOT_SELECTED);v.setBackgroundDrawable(v.getBackgroundO);return false;*设置图片按钮获取焦点改变状态* param inImageButton*/public final static void setButtonFocusChanged(View inView)inView.setOnTouchListener(buttonOnTouchListener); inView.setOnFocusChangeListener(buttonOnFocusChangeListener);
Android开发：ImageButton按下效果设计
