使用configChanges ="keyboardHidden | orientation"设置时,未调用onConfigurationChanged？

Question

我不是第一个遇到旋转调用onConfigurationChanged问题的人.但是由于常见的解决方案是在清单中设置configChanges ="keyboardHidden | orientation",这对我没有帮助,我发布这个问题而不管成千上万的"类似"问题.

这是一个简单的小部件,可在单击时打开和关闭铃声音量.它工作正常,直到屏幕旋转,之后点击没有任何反应.

为了解决这个问题,我想抓住onConfigurationChanged,但它永远不会被调用!我从来没有看到来自onConfigurationChanged的日志消息,但我确实在日志"I/ActivityManager(63):Config changed:"中看到另一条消息,表明配置发生了变化,并且期望调用onConfigurationChanged是合理的. .

请帮忙 :)

表现:

<?xml version="1.0" encoding="utf-8"?>  
<manifest xmlns:android="http://schemas.android.com/apk/res/android"  
    package="aa.android.x10.mini.mywidget" android:versionCode="1"  
    android:versionName="1.0">  
<application android:icon="@drawable/icon" 
             android:label="@string/app_name">  

    <receiver android:name="MyWidgetProvider" android:label="My Widget">  
        <intent-filter>  
            <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />  
            <action android:name="android.appwidget.action.ACTION_BATTERY_CHANGED" /> 
        </intent-filter>  
        <meta-data android:name="android.appwidget.provider"  
                   android:resource="@xml/widget_info" />  
    </receiver>  
    <service android:name=".UpdateWidgetService"
             android:configChanges="keyboardHidden|orientation"></service>  
    <activity android:name=".Test"></activity>  

    </application>  
    <uses-sdk android:minSdkVersion="7" />  

</manifest>   

---

WidgetProvider:包aa.android.x10.mini.mywidget;

import android.app.PendingIntent;  
import android.appwidget.AppWidgetManager;  
import android.appwidget.AppWidgetProvider;  
import android.content.Context;  
import android.content.Intent;  
import android.util.Log;
import android.widget.RemoteViews;  

public class MyWidgetProvider extends AppWidgetProvider 
{   
@Override  
public void onUpdate(Context context, AppWidgetManager appWidgetManager,  
        int[] appWidgetIds) 
{  
    Log.i("MyWidgetProvider onUpdate", "#### CALLED!");  

    RemoteViews remoteViews = new RemoteViews(context.getPackageName(),  
            R.layout.widget_layout);  
    Intent intent = new Intent(context.getApplicationContext(), UpdateWidgetService.class);  
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);  

    PendingIntent pendingIntent = PendingIntent.getService(context.getApplicationContext(), 0, intent, 
                                                            PendingIntent.FLAG_UPDATE_CURRENT);

    remoteViews.setOnClickPendingIntent(R.id.TextView01, pendingIntent);  

    appWidgetManager.updateAppWidget(appWidgetIds, remoteViews);  

    context.startService(intent);  
    }  
}  

---

服务:包aa.android.x10.mini.mywidget;

import android.app.Service;
import android.appwidget.AppWidgetManager;
import android.content.Intent;
import android.content.res.Configuration;
import android.media.AudioManager;
import android.os.IBinder;
import android.util.Log;
import android.widget.RemoteViews;

public class UpdateWidgetService extends Service 
{  
@Override  
public void onStart(Intent intent, int startId) 
{  
    Log.i("UpdateWidgetService", "#### CALLED!");  

    String state = null;  

    AudioManager mAudioManager = (AudioManager) getSystemService(AUDIO_SERVICE);

    if (mAudioManager.getRingerMode() != AudioManager.RINGER_MODE_NORMAL )
    {
        mAudioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
        mAudioManager.setStreamVolume(AudioManager.STREAM_RING,mAudioManager.getStreamMaxVolume(AudioManager.STREAM_RING),AudioManager.VIBRATE_SETTING_ON);
        state = "ON"; 
    }
    else
    {
        mAudioManager.setRingerMode(AudioManager.RINGER_MODE_VIBRATE);
        mAudioManager.setStreamVolume(AudioManager.STREAM_RING,0,AudioManager.VIBRATE_SETTING_ON);
        state = "OFF"; 
    }

    AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this.getApplicationContext());  

    int[] appWidgetIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);  
    if (appWidgetIds.length > 0) 
    {  
        for (int widgetId : appWidgetIds) 
        {  
            RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.widget_layout);  
            remoteViews.setTextViewText(R.id.TextView01, "\n" +"         "+ state);  
                appWidgetManager.updateAppWidget(widgetId, remoteViews);  
            }  
            stopSelf();  
        }  
        super.onStart(intent, startId);  
    }  

    @Override  
    public IBinder onBind(Intent intent) 
    {  
        return null;  
    }  

    @Override 
    public void onConfigurationChanged(Configuration newConfig) 
    { 
        Log.i("onConfigurationChanged", "##### CALLED! #####");  
        super.onConfigurationChanged(newConfig);
    }
}  

---

旋转屏幕时记录:

I/WindowManager(   63): Setting rotation to 1, animFlags=0 
I/ActivityManager(   63): Config changed: { scale=1.0 imsi=310/260 loc=en_US touch=3 keys=2/1/1 nav=3/1 orien=2 layout=17} 
I/UsageStats(   63): Unexpected resume of com.android.launcher while already resumed in com.android.launcher 

Answer 1

乔恩,

onConfigurationChanged()不是真的意味着Services.由于Services没有用户界面,因此无法保证onConfigurationChanged()无法可靠地启动.最好坚持使用Activity,因为Activities保证有用户界面.如果您担心您的Widget重新调整方向更改,那么最终是包含要处理的Activity的工作.这意味着如果Activity不旋转,您的Widget将不会自行重定向.

但是,如果您仍需要自己管理配置更改,则需要手动执行检查DefaultDisplay,如果方向发生更改,则会自动更改.这个简单的检查工作如下:

Display display = ((WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
if (display.getWidth() > display.getHeight())
    // In Landscape...
else if (display.getWidth() < display.getHeight())
    // In Portrait...

现在,您描述的问题,虽然它在Orientation更改时显现,但它并不是特定的Orientation Change问​​题.如果您查看代码onUpdate(),您将看到您一次只处理一个小部件.这个问题是方向更改的默认行为会破坏所有UI并重新创建它们.由于对Widget的多个副本的所有更新都会立即发生,并且您无法确定包含您的小部件的Activity将如何处理方向更改,因此您应该考虑所有可能的appWidgetIds.以下可能有所帮助:

for (int i : appWidgetIds) {
    int widgetId = appWidgetIds[i];
// Set the RemoteViews for the Widget
    RemoteViews remoteViews = new RemoteViews(context.getPackageName(),R.layout.widget_layout);
// Set the Pending Intent
    Intent intent = new Intent(context.getApplicationContext(),
                               UpdateWidgetService.class);  
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);  

    PendingIntent pendingIntent = PendingIntent.getService(context.getApplicationContext(), 
                     0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    remoteViews.setOnClickPendingIntent(R.id.TextView01, pendingIntent);  
// Update the individual widget
    appWidgetManager.updateAppWidget(widgetId, remoteViews);
}

希望这可以帮助.

FuzzicalLogic