Drawable tint 着色

其实在 Android Support V4 的包中提供了 DrawableCompat 类，我们很容易写出如下的辅助方法来实现 Drawable 的着色，如下：

public static Drawable tintDrawable(Drawable drawable, ColorStateList colors) {  
    final Drawable wrappedDrawable = DrawableCompat.wrap(drawable);
    DrawableCompat.setTintList(wrappedDrawable, colors);
    return wrappedDrawable;
}

使用例子：

EditText editText1 = (EditText) findViewById(R.id.edit_1);  
final Drawable originalDrawable = editText1.getBackground();  
final Drawable wrappedDrawable = tintDrawable(originalDrawable, ColorStateList.valueOf(Color.RED));  
editText1.setBackgroundDrawable(wrappedDrawable);

EditText editText2 = (EditText) findViewById(R.id.edit_2);  
editText2.setBackgroundDrawable(tintDrawable(editText2.getBackground(),  
        ColorStateList.valueOf(Color.parseColor("#03A9F4"))));

效果如下

image.png

https://www.race604.com/tint-drawable/