广播起火时,我想在广播接收器内部使用Loader管理器及其回调吗? [英] I would like to use Loader manager and its call backs inside broadcast receiver when broadcast fire?
问题描述
我无法获取getSupportLoaderManger或getLoaderManager
I m not able to get getSupportLoaderManger or getLoaderManager
我很困惑如何解决这个问题,
I m confuse how to resolve this,
public class MyBroadCastReceiver extends BroadcastReceiver implements LoaderManager.LoaderCallbacks<Cursor> {
int cpValue;
private CursorLoader cursorLoader;
private Context mContext;
@Override
public void onReceive(Context context, Intent intent) {
mContext = context;
mContext.getSupportLoaderManager().initLoader(1, null, context);
}
private void doTheTask(MyAsync task, Intent intent) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
// Android 4.4 (API 19) and above
task.execute(intent);
} else {
// Android 3.0 to Android 4.3
task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, intent);
}
}
@Override
public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
cursorLoader = new CursorLoader(mContext, Uri.parse("content://com.MyApplication.Provider/cte"), null, null, null, null);
return cursorLoader;
}
@Override
public void onLoadFinished(Loader<Cursor> arg0, Cursor cursor) {
if (cursor != null) {
cursor.moveToFirst();
String res = "0";
while (!cursor.isAfterLast()) {
res = cursor.getString(cursor.getColumnIndex("present"));
cursor.moveToNext();
}
cpValue = Integer.valueOf(res);
} else {
cpValue = 0;
}
}
@Override
public void onLoaderReset(Loader<Cursor> arg0) {
}
}
我的问题是,我如何才能在broadCast中使用loaderManager,它在活动和片段方面都可以正常工作.
My Question is So how can i use loaderManager in broadCast it is working fine in activity and fragment.
如何在broadCast Receiver内使用LoaderManager?
How Can I use LoaderManager inside the broadCast Receiver?
推荐答案
为此,您可以进行透明"活动.
For that One way is there you can go for the Transparent activity.
Manifest.xml
Manifest.xml
<activity
android:name=".activity.TransparentActivity"
android:theme="@style/Theme.Transparent">
</activity>
Style.xml
Style.xml
<style name="Theme.Transparent" parent="android:Theme">
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowContentOverlay">@null</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowIsFloating">true</item>
<item name="android:backgroundDimEnabled">false</item>
</style>
TransparentActivity.java
TransparentActivity.java
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v7.app.AppCompatActivity;
public class TransparentActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<Cursor> {
private CursorLoader cursorLoader;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportLoaderManager().initLoader(1, null, this);
}
@Override
public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
cursorLoader = new CursorLoader(this, Uri.parse("content://com.example.yourprovider/cte"), null, null, null, null);
return cursorLoader;
}
@Override
public void onLoadFinished(Loader<Cursor> arg0, Cursor cursor) {
if (cursor != null) {
//Do your stuff
}
finish();
}
@Override
public void onLoaderReset(Loader<Cursor> arg0) {
}
}
因此,您将从广播中调用此活动,它将更新
So You will call this activity from the broadcast and it will going to update
Intent newIntent = new Intent(context,TransparentActivity.class);
newIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(newIntent);
所以我希望这样可以解决您的问题
So this will going to resolve your issues I hope so
这是实现这一目标的一些间接方式
This some how indirect way for this to achieve
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