活动恢复时，Android自定义视图onVisibilityChanged调用

Question

我为自动动画创建了自定义布局，无论它可见还是消失。这是我的代码：

public class DidiRelativeLayout extends RelativeLayout {
private AnimUtils animUtils;
private int animVisible, animGone, durVisible, durGone;
public DidiRelativeLayout(Context context) {
    super(context);
    animUtils = AnimUtils.getInstance(context);
}

public DidiRelativeLayout(Context context, AttributeSet attrs) {
    super(context, attrs);
    animUtils = AnimUtils.getInstance(context);
    TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.DidiRelativeLayout, 0, 0);
    try {
        animVisible = ta.getInteger(R.styleable.DidiRelativeLayout_anim_visible, -1);
        animGone = ta.getInteger(R.styleable.DidiRelativeLayout_anim_gone, -1);
        durVisible = ta.getInteger(R.styleable.DidiRelativeLayout_anim_visible_duration, AttributeConst.DEFAULT_DURATION_ANIMATION);
        durGone = ta.getInteger(R.styleable.DidiRelativeLayout_anim_gone_duration, AttributeConst.DEFAULT_DURATION_ANIMATION);
    } finally {
        ta.recycle();
    }
}

public DidiRelativeLayout(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    animUtils = AnimUtils.getInstance(context);
    TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.DidiRelativeLayout, defStyleAttr, 0);
    try {
        animVisible = ta.getInteger(R.styleable.DidiRelativeLayout_anim_visible, -1);
        animGone = ta.getInteger(R.styleable.DidiRelativeLayout_anim_gone, -1);
        durVisible = ta.getInteger(R.styleable.DidiRelativeLayout_anim_visible_duration, AttributeConst.DEFAULT_DURATION_ANIMATION);
        durGone = ta.getInteger(R.styleable.DidiRelativeLayout_anim_gone_duration, AttributeConst.DEFAULT_DURATION_ANIMATION);
    } finally {
        ta.recycle();
    }
}

@Override
protected void onVisibilityChanged(@NonNull View changedView, int visibility) {
    super.onVisibilityChanged(changedView, visibility);
    try {
        switch (visibility) {
            case VISIBLE:
                startAnimation(getAnim(animVisible, durVisible));
                break;
            case INVISIBLE:
            case GONE:
                startAnimation(getAnim(animGone, durGone));
                break;
        }
    }
    catch (Exception e){
        e.printStackTrace();
    }
}

}

它工作正常，但是当活动从某处恢复时，onVisibilityChanged自动调用。我该如何避免呢？谢谢。

更新：自定义布局的完整代码

Answer 1

是的，这是因为当您的活动再次可见时会调用onResume，因此您可以创建一个自定义方法并在需要时调用，替换为：

@Override
protected void onVisibilityChanged(@NonNull View changedView, int visibility) {
    super.onVisibilityChanged(changedView, visibility);
    try {
        switch (visibility) {
            case VISIBLE:
                startAnimation(getAnim(animVisible, durVisible));
                break;
            case INVISIBLE:
            case GONE:
                startAnimation(getAnim(animGone, durGone));
                break;
        }
    }
    catch (Exception e){
        e.printStackTrace();
    }
}

对此：

public void changeVisibility(int visibility) {
try {
    switch (visibility) {
        case VISIBLE:
            startAnimation(getAnim(animVisible, durVisible));
            break;
        case INVISIBLE:
        case GONE:
            startAnimation(getAnim(animGone, durGone));
            break;
    }
}
catch (Exception e){
    e.printStackTrace();
}

}

然后调用您的代码：

yourView.changeVisibility(View.GONE);