0

我正在尝试为复选框设置自定义背景，但它加倍了，我不知道为什么。

我的主要活动：

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    CheckBox cb = new CheckBox(getApplicationContext());
    DrawableCheckButton d = new DrawableCheckButton(getApplicationContext());
    cb.setBackgroundDrawable(d);
    setContentView(cb);
}

DrawableCheckButton 类：

public class DrawableCheckButton extends StateListDrawable {

public DrawableCheckButton(Context context) {
    int[] state_checked = { android.R.attr.state_checked };
    int[] state_active = { android.R.attr.state_enabled };
    CustomDrawableCheckButton d = new CustomDrawableCheckButton(context);
    CustomDrawableCheckButton2 d2 = new CustomDrawableCheckButton2(context);
    addState(state_checked, d);
    addState(state_active, d2);
}

}

另一个班级看起来像这样

public class CustomDrawableCheckButton extends Drawable{
private Context context;
public CustomDrawableCheckButton(Context context) {
    // TODO Auto-generated constructor stub
    this.context = context;
}
@Override
public void draw(Canvas canvas) {
    Path path1 = new Path();
    Paint paint1 = new Paint();
    path1.moveTo(0, 3);
    path1.lineTo(17, 3);
    path1.moveTo(0, 3);
    path1.lineTo(0, 23);
    path1.lineTo(20, 23);
    path1.lineTo(20, 14);
    paint1.setColor(context.getResources().getColor(R.color.orange));
    paint1.setStrokeWidth(1);
    paint1.setStyle(Paint.Style.STROKE);
    //
    Path path2 = new Path();
    Paint paint2 = new Paint();
    path2.moveTo(4,10);
    path2.lineTo(10, 16);
    path2.lineTo(22, 4);
    paint2.setColor(context.getResources().getColor(R.color.purple));
    paint2.setStrokeWidth(5);
    paint2.setStyle(Paint.Style.STROKE);
    canvas.drawPath(path1, paint1);
    canvas.drawPath(path2, paint2);

}

我需要帮助。

4

2 回答 2

0

这是我的建议：
在MainActivity中，您应该避免使用ApplicationContext，请参阅此问题以获取更多信息，并使用setButtonDrawable而不是setBackgroundDrawable：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    CheckBox cb = new CheckBox(this);
    DrawableCheckButton d = new DrawableCheckButton(this);
    cb.setButtonDrawable(d);
    setContentView(cb);
}

在DrawableCheckButton：

public DrawableCheckButton(Context context) {
    CustomDrawableCheckButton d = new CustomDrawableCheckButton(context);
    addState(new int[]{android.R.attr.state_checked }, d);
    CustomDrawableCheckButton2 d2 = new CustomDrawableCheckButton2(context);
    addState(new int[]{}, d2);
}

希望有所帮助。请让我知道它是否有效。

于 2013-02-28T17:51:21.573 回答
0

答案是我没有做 cb.setBackgroundDrawable()，而是做了 cb.setButtonDrawable()。背景是全部，按钮是标记。

于 2013-03-01T13:02:15.337 回答