必须是: View.VISIBLE，View.INVISIBLE，View.GONE

Question

在我的一项活动中，我正在保存和恢复视图的可见度。为此，我调用mButton.getVisibility()并将其保存在Bundle中。在onRestore中，我得到了int值，它显示了一个错误。

Must be one of: View.VISIBLE, View.INVISIBLE, View.GONE less... (Ctrl+F1) 
Reports two types of problems:
- Supplying the wrong type of resource identifier. For example, when calling Resources.getString(int id), you should be passing R.string.something, not R.drawable.something.
- Passing the wrong constant to a method which expects one of a specific set of constants. For example, when calling View#setLayoutDirection, the parameter must be android.view.View.LAYOUT_DIRECTION_LTR or android.view.View.LAYOUT_DIRECTION_RTL.

代码编译和运行时没有任何错误。

码

@Override
public void onSaveInstanceState(@NonNull Bundle savedInstanceState) {
    savedInstanceState.putInt("BUTTON_VISIBILITY", mButton.getVisibility());

    super.onSaveInstanceState(savedInstanceState);
}

public void onRestoreInstanceState(@NonNull Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);

    mButton.setVisibility(savedInstanceState.getInt("BUTTON_VISIBILITY"));
    // savedInstanceState.getInt("BUTTON_VISIBILITY") is underlined red
}

Answer 1

正如我刚才所评论的，您可以添加@SuppressWarnings("ResourceType")。希望这能有所帮助！

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