Question

我正在使用ActionBar。如果我将它设置为旋转，我想在标题栏上有一个刷新进度微调器 - 否则隐藏它。这可能吗？：

// My menu has a refresh item, but it shouldn't be visible on the
// actionbar unless it's spinning.
<menu xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:id="@+id/menu_refresh"
    android:title="@string/refresh"
    android:icon="@drawable/ic_action_refresh" />
</menu>

...

// When I need to show some work being done on my activity,
// can I somehow now make the spinner associated with the
// refresh item become visible on the action bar?
getActionBarHelper().setRefreshActionItemState(true);

我不希望它在ActionBar上，除非它正在“进行中”/旋转。

由于

Answer 1

没有代码标签的道歉，从手机发布...

这是来自ActionbarSherlock（谷歌，如果你没有遇到它，允许在蜂窝前支持动作栏）

on onCreate of main activity

// This has to be called before setContentView and you must use the 
// class in android.support.v4.view and NOT android.view

requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);

显示/隐藏操作栏中的进度。注意使用actionbarsherlock你必须使用boolean.TRUE / FALSE，而不仅仅是true / false .........

if (getSupportLoaderManager().hasRunningLoaders()) {
   setProgressBarIndeterminateVisibility(Boolean.TRUE); 
} else {
   setProgressBarIndeterminateVisibility(Boolean.FALSE); 
}

Answer 2

如果您从ActionBarActivity延伸，请尝试：

public class MainActivity extends ActionBarActivity {

    boolean showUp=true;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        supportRequestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.activity_main);
        setSupportProgressBarIndeterminateVisibility(Boolean.TRUE);

        Button b = (Button) findViewById(R.id.myButton);
        b.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                if(showUp){
                    setSupportProgressBarIndeterminateVisibility(Boolean.FALSE);
                }else {
                    setSupportProgressBarIndeterminateVisibility(Boolean.TRUE);
                }
                showUp=!showUp;
            }
        });
}

在ActionBar上显示进度微调器（刷新）？

2 个答案: