android - 在 Activity 标题栏中显示加载图标

Question

如何在 Activity 标题栏中显示加载图标？

Answer 1

@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
    setContentView(R.layout.your_layout);
}

然后......无论你想去哪里:

// then, you can do this to show the icon
setProgressBarIndeterminateVisibility(true);
//or to hide it
setProgressBarIndeterminateVisibility(false);

确保在 setContentView 之前使用 requestWindowFeature。