Label.java 文件源码-java代码片段

Label.java 文件源码

java

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@TargetApi(Build.VERSION_CODES.LOLLIPOP)
void onActionDown() {
    if (mUsingStyle) {
        mBackgroundDrawable = getBackground();
    }

    if (mBackgroundDrawable instanceof StateListDrawable) {
        StateListDrawable drawable = (StateListDrawable) mBackgroundDrawable;
        drawable.setState(new int[]{android.R.attr.state_pressed});
    } else if (Util.hasLollipop() && mBackgroundDrawable instanceof RippleDrawable) {
        RippleDrawable ripple = (RippleDrawable) mBackgroundDrawable;
        ripple.setState(new int[]{android.R.attr.state_enabled, android.R.attr.state_pressed});
        ripple.setHotspot(getMeasuredWidth() / 2, getMeasuredHeight() / 2);
        ripple.setVisible(true, true);
    }
    setPressed(true);
}