Android - 三星:使用配置活动创建小部件失败

在我自己的三星设备上进行测试，如果结果 Intent 没有应用程序，似乎问题是 TouchWiz 窒息附加的小部件 ID，即使它是 RESULT_CANCELLED.

来自App Widget 开发者页面:p><块引用>

• App Widget 宿主调用配置 Activity，配置 Activity 应始终返回结果.结果应包括启动 Activity 的 Intent 传递的 App Widget ID(保存在 Intent extras 中为 EXTRA_APPWIDGET_ID).

目前尚不清楚您最终希望如何处理结果，但在 onCreate() 中设置有效结果绝对是个好主意，以防用户退出配置活动.例如:

final int id = getIntent().getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, 0);最终意图结果 = new Intent().putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id);setResult(RESULT_OK, 结果);

I built an application with the possibility to add widgets to the home screen. The widget is working with my Nexus 6P and a Motorola Moto G3.

With Samsung Phones (Tested with S3 mini (4.1.2), S5, S6 (6.0.1)) the widget is not added at all or TouchWiz crashes.

With another launcher (Nova) the widget is also not created on the S3 mini.

In logcat I don't see any error message at all.

I tried to narrow the problem down as far as possible. The widget gets created if I remove the android:configure="de.cliff.strichliste.widgets.WidgetConfigurationActivity" from the counter_widget_info.xml. If I want to use a configuration activity TouchWiz crashes on the Samsung S3 mini.

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
    android:minWidth="40dp"
    android:minHeight="40dp"
    android:configure="de.cliff.strichliste.widgets.WidgetConfigurationActivity"
    android:updatePeriodMillis="1800000"
    android:initialLayout="@layout/widget_counter"
    android:resizeMode="horizontal|vertical"
    android:widgetCategory="home_screen"
    android:previewImage="@drawable/widget_preview">
</appwidget-provider>

In the AndroidManifest.xml I register the widget with the following lines:

<receiver
            android:name=".widgets.CounterWidgetProvider">
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>
            <meta-data
                android:name="android.appwidget.provider"
                android:resource="@xml/counter_widget_info" />
</receiver>

On the Java side, I've got the following in the WidgetConfigurationActivity:

public class WidgetConfigurationActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        WidgetConfigurationBinding binding = DataBindingUtil.setContentView(this, R.layout.widget_configuration);
        setResult(RESULT_OK);
    }
}

And this in the WidgetProvider class:

public class CounterWidgetProvider extends AppWidgetProvider {
@Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        super.onUpdate(context, appWidgetManager, appWidgetIds);
        Intent intent = new Intent(context, CounterWidgetProvider.class);
        context.startService(intent);
    }
}

From testing on my own Samsung devices, it seems the problem is that TouchWiz chokes if the result Intent doesn't have the App Widget ID attached, even if it's RESULT_CANCELLED.

From the App Widget developer page:

• The App Widget host calls the configuration Activity and the configuration Activity should always return a result. The result should include the App Widget ID passed by the Intent that launched the Activity (saved in the Intent extras as EXTRA_APPWIDGET_ID).

It's unclear how exactly you wish to ultimately handle the result, but it's definitely a good idea to go ahead and set a valid result in onCreate(), in case the user backs out of the configuration Activity. For example:

final int id = getIntent().getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, 0);
final Intent result = new Intent().putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id);
setResult(RESULT_OK, result);