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使用 Button 时为了让用户有“按下”的效果，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(event.getAction() == MotionEvent.ACTION_DOWN){ //更改为按下时的背景图片 v.setBackgroundResource(R.drawable.pressed); }else
if(event.getAction() == MotionEvent.ACTION_UP){ //改为抬起时的图片 v.setBackgroundResource(R.drawable.released); } return
false; } }); 2.XML实现： <?xml version="1.0"
encoding="UTF-8"?> <item android:state_pressed="false"
android:drawable="@drawable/button_add"
/> <item android:state_pressed="true"
android:drawable="@drawable/button_add_pressed"
/> <item android:state_focused="true"
android:drawable="@drawable/button_add_pressed"
/> <item android:drawable="@drawable/button_add"
/> </selector> <?xml version="1.0"
encoding="UTF-8"?> <item android:state_pressed="false"
android:drawable="@drawable/button_add"
/> <item android:state_pressed="true"
android:drawable="@drawable/button_add_pressed"
/> <item android:state_focused="true"
android:drawable="@drawable/button_add_pressed"
/> <item android:drawable="@drawable/button_add"
/> </selector> 这个文件放在 drawable 目录下面。命名为 button_add_x.xml，使用方法如下： <ImageButton android:id="@+id/ImageButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#00000000" android:src="@drawable/button_add_x"
> </ImageButton> <ImageButton android:id="@+id/ImageButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#00000000" android:src="@drawable/button_add_x"
> </ImageButton> 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, 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 OnFocusChangeListener buttonOnFocusChangeListener=new
OnFocusChangeListener() { @Override public
void onFocusChange(View v, boolean
hasFocus) { if
(hasFocus) { v.getBackground().setColorFilter(new
ColorMatrixColorFilter(BT_SELECTED)); v.setBackgroundDrawable(v.getBackground()); } else { v.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
OnTouchListener() { @Override public
boolean onTouch(View v, MotionEvent event) { if(event.getAction() == MotionEvent.ACTION_DOWN){ v.getBackground().setColorFilter(new
ColorMatrixColorFilter(BT_SELECTED)); v.setBackgroundDrawable(v.getBackground()); } else
if(event.getAction() == MotionEvent.ACTION_UP){ v.getBackground().setColorFilter(new
ColorMatrixColorFilter(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.setOnTouchListener(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, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0
}; /** * 按钮焦点改变 */ public
final static OnFocusChangeListener buttonOnFocusChangeListener=new
OnFocusChangeListener() { @Override public
void onFocusChange(View v, boolean
hasFocus) { if
(hasFocus) { v.getBackground().setColorFilter(new
ColorMatrixColorFilter(BT_SELECTED)); v.setBackgroundDrawable(v.getBackground()); } else { v.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
OnTouchListener() { @Override public
boolean onTouch(View v, MotionEvent event) { if(event.getAction() == MotionEvent.ACTION_DOWN){ v.getBackground().setColorFilter(new
ColorMatrixColorFilter(BT_SELECTED)); v.setBackgroundDrawable(v.getBackground()); } else
if(event.getAction() == MotionEvent.ACTION_UP){ v.getBackground().setColorFilter(new
ColorMatrixColorFilter(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.setOnTouchListener(buttonOnTouchListener); inView.setOnFocusChangeListener(buttonOnFocusChangeListener); } |
原文：http://www.cnblogs.com/diigu/p/3551701.html