Android appwidget 将其他小部件变成添加的小部件，而第二个小部件不起作用？

Question

我正在制作一个包含 2 个小部件的 Android 应用程序。我有 1 个小部件设置和工作，第二个小部件在小部件列表中被识别并正确加载，但是:

如果我在添加小部件2时屏幕上已经有小部件1，则两个小部件都变为小部件2。如果我有一个小部件2和一个小部件1，并添加一个小部件2，它们都变为小部件2。如果我添加小部件 1，也会发生同样的情况 - 它们都会更改为小部件 1。

此外，点击小部件 2 时没有任何反应，即使我使用了与小部件 1 几乎相同的代码。

相关文件如下:

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.liamwli.reboot_widget"
    android:installLocation="internalOnly"
    android:versionCode="3"
    android:versionName="1.1" >

    <uses-sdk
        android:minSdkVersion="7"
        android:targetSdkVersion="15" />

    <uses-permission android:name="android.permission.REBOOT" />
    <uses-permission android:name="com.android.vending.CHECK_LICENSE" />

    <application
        android:allowClearUserData="false"
        android:icon="@drawable/icon"
        android:label="@string/app_name" >
        <activity
            android:name=".reboot_widget_activeity"
            android:excludeFromRecents="true"
            android:icon="@drawable/icon"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <receiver
            android:name=".Reboot_rec"
            android:icon="@drawable/icon"
            android:label="Reboot Recovery Widget" >
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
                <action android:name="com.liamwli.reboot_widget.Reboot_rec.ACTION_WIDGET_CLICK_RECEIVER" />
            </intent-filter>

            <meta-data
                android:name="android.appwidget.provider"
                android:resource="@xml/rebr_widget" />
        </receiver>

        <service android:name=".Reboot_rec$ToggleService" />

        <receiver
            android:name=".Widget"
            android:icon="@drawable/icon"
            android:label="Reboot Widget" >
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
                <action android:name="com.liamwli.reboot_widget.Widget.ACTION_WIDGET_CLICK_RECEIVER" />
            </intent-filter>

            <meta-data
                android:name="android.appwidget.provider"
                android:resource="@xml/widgetstuff" />
        </receiver>

        <service android:name=".Widget$ToggleService" />

        <activity
            android:name=".Reboot"
            android:excludeFromRecents="true"
            android:icon="@drawable/icon"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.liamwli.reboot_widget.REBOOT" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".Reboot_rec"
            android:excludeFromRecents="true"
            android:icon="@drawable/icon"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.liamwli.reboot_widget.REBOOT_REC" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".hidprefs"
            android:excludeFromRecents="true"
            android:icon="@drawable/icon"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.liamwli.reboot_widget.HIDPREFS" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Widget.java(对于小部件 1):

package com.liamwli.reboot_widget;

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

public class Widget extends AppWidgetProvider {
    public static String ACTION_WIDGET_CLICK_RECEIVER = "ActionReceiverWidget";

    public static int appid[];
    public static RemoteViews rview;

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager,
            int[] appWidgetIds) {
        updateWidgetState(context, "");
    }

    @Override
    public void onReceive(Context paramContext, Intent paramIntent) {
        String str = paramIntent.getAction();
        if (paramIntent.getAction().equals(ACTION_WIDGET_CLICK_RECEIVER)) {
            updateWidgetState(paramContext, str);
        } else {
            if ("android.appwidget.action.APPWIDGET_DELETED".equals(str)) {
                int i = paramIntent.getExtras().getInt("appWidgetId", 0);
                if (i == 0) {

                } else {
                    int[] arrayOfInt = new int[1];
                    arrayOfInt[0] = i;
                    onDeleted(paramContext, arrayOfInt);
                }
            }
            super.onReceive(paramContext, paramIntent);
        }
    }

    static void updateWidgetState(Context paramContext, String paramString) {
        RemoteViews localRemoteViews = buildUpdate(paramContext, paramString);
        ComponentName localComponentName = new ComponentName(paramContext,
                Widget.class);
        AppWidgetManager.getInstance(paramContext).updateAppWidget(
                localComponentName, localRemoteViews);
    }

    private static RemoteViews buildUpdate(Context paramContext, String paramString)
       {
         // Toast.makeText(paramContext, "buildUpdate() ::"+paramString, Toast.LENGTH_SHORT).show();
         rview = new RemoteViews(paramContext.getPackageName(), R.layout.widget_layout);
         Intent active = new Intent(paramContext, Widget.class);
         active.setAction(ACTION_WIDGET_CLICK_RECEIVER);

         PendingIntent configPendingIntent = PendingIntent.getActivity(paramContext, 0, active, 0);

// upadte this R.id.buttonus1 with your layout or image id on which click you want to start Activity

Intent configIntent = new Intent(paramContext,  Reboot.class);
configIntent.setAction((ACTION_WIDGET_CLICK_RECEIVER));
PendingIntent configPendingIntent1 = PendingIntent.getActivity(paramContext, 0, configIntent, 0);
rview.setOnClickPendingIntent(R.id.bRB, configPendingIntent1);
         if(paramString.equals(ACTION_WIDGET_CLICK_RECEIVER))
         {



         }  
          return rview; 
       }

    @Override
    public void onEnabled(Context context) {
        super.onEnabled(context);
        // Toast.makeText(context, "onEnabled()  ", Toast.LENGTH_SHORT).show();
    }

    // Called each time an instance of the App Widget is removed from the host
    @Override
    public void onDeleted(Context context, int[] appWidgetId) {
        super.onDeleted(context, appWidgetId);
        // Toast.makeText(context, "onDeleted()  ", Toast.LENGTH_SHORT).show();
    }

    // Called when last instance of App Widget is deleted from the App Widget
    // host.
    @Override
    public void onDisabled(Context context) {
        super.onDisabled(context);
        // Toast.makeText(context, "onDisabled()  ", Toast.LENGTH_SHORT).show();
    }

}

Reboot_rec.java(用于小部件 2):

package com.liamwli.reboot_widget;

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

public class Reboot_rec extends AppWidgetProvider {


    public static String ACTION_WIDGET_CLICK_RECEIVER = "ActionReceiverWidget";

    public static int appid[];
    public static RemoteViews rview;

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager,
            int[] appWidgetIds) {
        updateWidgetState(context, "");
    }

    @Override
    public void onReceive(Context paramContext, Intent paramIntent) {
        String str = paramIntent.getAction();
        if (paramIntent.getAction().equals(ACTION_WIDGET_CLICK_RECEIVER)) {
            updateWidgetState(paramContext, str);
        } else {
            if ("android.appwidget.action.APPWIDGET_DELETED".equals(str)) {
                int i = paramIntent.getExtras().getInt("appWidgetId", 0);
                if (i == 0) {

                } else {
                    int[] arrayOfInt = new int[1];
                    arrayOfInt[0] = i;
                    onDeleted(paramContext, arrayOfInt);
                }
            }
            super.onReceive(paramContext, paramIntent);
        }
    }

    static void updateWidgetState(Context paramContext, String paramString) {
        RemoteViews localRemoteViews = buildUpdate(paramContext, paramString);
        ComponentName localComponentName = new ComponentName(paramContext,
                Widget.class);
        AppWidgetManager.getInstance(paramContext).updateAppWidget(
                localComponentName, localRemoteViews);
    }

    private static RemoteViews buildUpdate(Context paramContext, String paramString)
       {
         // Toast.makeText(paramContext, "buildUpdate() ::"+paramString, Toast.LENGTH_SHORT).show();
         rview = new RemoteViews(paramContext.getPackageName(), R.layout.widget_layout_rec);
         Intent active = new Intent(paramContext, Reboot_rec.class);
         active.setAction(ACTION_WIDGET_CLICK_RECEIVER);

         PendingIntent configPendingIntent = PendingIntent.getActivity(paramContext, 0, active, 0);

// upadte this R.id.buttonus1 with your layout or image id on which click you want to start Activity

Intent configIntent = new Intent(paramContext,  Reboot_rec_ac.class);
configIntent.setAction((ACTION_WIDGET_CLICK_RECEIVER));
PendingIntent configPendingIntent1 = PendingIntent.getActivity(paramContext, 0, configIntent, 0);
rview.setOnClickPendingIntent(R.id.bRBR, configPendingIntent1);
         if(paramString.equals(ACTION_WIDGET_CLICK_RECEIVER))
         {



         }  
          return rview; 
       }

    @Override
    public void onEnabled(Context context) {
        super.onEnabled(context);
        // Toast.makeText(context, "onEnabled()  ", Toast.LENGTH_SHORT).show();
    }

    // Called each time an instance of the App Widget is removed from the host
    @Override
    public void onDeleted(Context context, int[] appWidgetId) {
        super.onDeleted(context, appWidgetId);
        // Toast.makeText(context, "onDeleted()  ", Toast.LENGTH_SHORT).show();
    }

    // Called when last instance of App Widget is deleted from the App Widget
    // host.
    @Override
    public void onDisabled(Context context) {
        super.onDisabled(context);
        // Toast.makeText(context, "onDisabled()  ", Toast.LENGTH_SHORT).show();
    }





}

Rebr_widget.xml(用于小部件 2):

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android" android:minHeight="40dp" android:minWidth="40dp" android:initialLayout="@layout/widget_layout_rec">


</appwidget-provider>

widgetstuff.xml(对于小部件 1):

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android" android:minHeight="40dp" android:minWidth="40dp" android:initialLayout="@layout/widget_layout">


</appwidget-provider>

谁能告诉我问题出在哪里？我正在竭尽全力想弄清楚:(

Answer 1

您还没有使用 onUpdate 参数 int[] appWidgetIds。

你应该遍历它，并对每个应用任何代码。目前您没有告诉它要更新哪个小部件。您也不会尝试更新多个小部件。

下面的示例，注意 N 上的循环。并​​且 sub 方法还使用小部件的 id，它是从 onUpdate 上的循环传递的。

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        final int N = appWidgetIds.length;

        Log.d(LOG_TAG, "Updating Example Widgets.");

        // Perform this loop procedure for each App Widget that belongs to this
        // provider
        for (int i = 0; i < N; i++) {
            int appWidgetId = appWidgetIds[i];

            // Create an Intent to launch ExampleActivity
            Intent intent = new Intent(context, WidgetExampleActivity.class);
            PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);

            // Get the layout for the App Widget and attach an on-click listener
            // to the button
            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget1);
            views.setOnClickPendingIntent(R.id.button, pendingIntent);
            // Tell the AppWidgetManager to perform an update on the current app
            // widget
            appWidgetManager.updateAppWidget(appWidgetId, views);


            // Update The clock label using a shared method
            updateAppWidget(context, appWidgetManager, appWidgetId);
        }
    }

    public static void updateAppWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {
        String currentTime =  df.format(new Date());

        RemoteViews updateViews = new RemoteViews(context.getPackageName(), R.layout.widget1);
        updateViews.setTextViewText(R.id.widget1label, currentTime);
        appWidgetManager.updateAppWidget(appWidgetId, updateViews);
    }