android button设置选中状态,Android ImageButton处于选定状态？

ToggleImageButton它实现Checkable接口，并支持OnCheckedChangeListener和android:checkedXML属性：

public class ToggleImageButton extends ImageButton implements Checkable {

private OnCheckedChangeListener onCheckedChangeListener;

public ToggleImageButton(Context context) {

super(context);

}

public ToggleImageButton(Context context, AttributeSet attrs) {

super(context, attrs);

setChecked(attrs);

}

public ToggleImageButton(Context context, AttributeSet attrs, int defStyle) {

super(context, attrs, defStyle);

setChecked(attrs);

}

private void setChecked(AttributeSet attrs) {

TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.ToggleImageButton);

setChecked(a.getBoolean(R.styleable.ToggleImageButton_android_checked, false));

a.recycle();

}<