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
