Android 动态更改Shape（GradientDrawable） 及Seletor(StateListDrawable)资源

Shape(GradientDrawable)

android.graphics.drawable 
类 GradientDrawable 
java.lang.Object 
SubClass  android.graphics.drawable.Drawable 
SubClass android.graphics.drawable.GradientDrawable 

public class GradientDrawable extends Drawable

TextView textView = new TextView(this);
GradientDrawable drawable = new GradientDrawable();
drawable.setCornerRadius(5);
drawable.setStroke(1, Color.parseColor("#cccccc"));
drawable.setColor(Color.parseColor("#eeeeee"));
textView.setBackgroundDrawable(drawable);

Seletor(StateListDrawable)

 private StateListDrawable initStateListDrawable() {
        //初始化一个空对象
        StateListDrawable stalistDrawable = new StateListDrawable();
        //获取对应的属性值 Android框架自带的属性 attr
        int pressed = android.R.attr.state_pressed;
        int focused = android.R.attr.state_focused;

        stalistDrawable.addState(new int []{-pressed}, getResources().getDrawable(R.drawable.title_button_back));
        stalistDrawable.addState(new int []{pressed}, getResources().getDrawable(R.drawable.title_button_back_h));
        stalistDrawable.addState(new int []{-focused }, getResources().getDrawable(R.drawable.title_button_back));
        //没有任何状态时显示的图片，我们给它设置我空集合
        stalistDrawable.addState(new int []{}, getResources().getDrawable(R.drawable.title_button_back));
        return stalistDrawable;
    }

相关https://blog.csdn.net/qinjuning/article/details/7474827