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我不知道如何在Runnable方法(或w /这个特定的方法)上进行返回。我可能对(?)有错误的想法。任何帮助?日Thnx!如何在此方法中返回Runnable?
*这是从this post继续/相关。但认为这可能是一个问题。
在活动的onCreate:
Runnable doIfMounted = orderASC_Label();
StorageStateChecker.performExternalStorageOperation(doIfMounted);
了Runnable:
/**
* -- Default List Order (Ascending)
* =====================================================================
* @return
**/
public Runnable orderASC_Label() {
Cursor databaseCursor = db.rawQuery(
"SELECT * FROM AC_list ORDER BY `label` ASC", null);
Adapter_AC databaseListAdapter = new Adapter_AC(this,
R.layout.list_item, databaseCursor, new String[] { "label",
"title", "description", "gotoURL" }, new int[] {
R.id.label, R.id.listTitle, R.id.caption, R.id.dummy });
databaseListAdapter.notifyDataSetChanged();
this.setListAdapter(databaseListAdapter);
return /*null; <-- What do I do here to make this runnable */
}
的StorageStateChecker类:
public class StorageStateChecker {
public static boolean performExternalStorageOperation(Runnable doIfMounted) {
if (android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED)) {
if (doIfMounted != null) {
doIfMounted.run();
}
return true;
} else if (android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_UNMOUNTED)) {
//Alerts.sdCardMissing(this);
}
return false;
}
}
我明白了。日Thnx!我会试一试。 – CelticParser 2011-05-05 18:41:41