详解Android自定义控件属性

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public class CustomTextView extends TextView {
  private int textSize;//自定义文件大小
  private int textColor;//自定义文字颜色

  //自定义属性，会调用带两个对数的构造方法
  public CustomTextView(Context context, AttributeSet attrs) {
    super(context, attrs);
    TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.custom_view);//TypedArray属性对象
    textSize = ta.getDimensionPixelSize(R.styleable.custom_view_custom_size, 20);//获取属性对象中对应的属性值 
    textColor = ta.getColor(R.styleable.custom_view_custom_color, 0x0000ff);
    setColorAndSize(textColor, textSize);//设置属性
    ta.recycle();
  }

  public CustomTextView(Context context) {
    super(context);
  }

  private void setColorAndSize(int textColor, int textSize) {
    setTextColor(textColor);
    setTextSize(textSize);
  }

}