ImageButton自定义按钮的按下效果的高效实现方法(非一般)
通常情况下,我们可以采用如下方式实现:
<?xml version="1.0" encoding="UTF-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <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>
<ImageButton android:id="@+id/ImageButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#00000000" android:src="@drawable/button_add_x" />
/** * 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); }