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可以使用分享意图分享到 Facebook。单击发送按钮时，设备上设置的默认应用程序列表将显示在弹出对话框中。我的问题是是否可以使用共享意图仅共享给一个应用程序。例如，使用共享意图仅发送到 Facebook。分享意图直接打开本机 facebook 应用程序。

我找到了这个链接：http: //vnstep.wordpress.com/2012/04/14/share-via-android/

但

Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
    shareIntent.setType("text/plain");
    shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "anc");
    shareIntent.putExtra(android.content.Intent.EXTRA_TEXT, "ccc");
    PackageManager pm = context.getPackageManager();
    List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);
    for (final ResolveInfo app : activityList) {
        if ((app.activityInfo.name).contains("facebook")) {
            final ActivityInfo activity = app.activityInfo;
            final ComponentName name = new ComponentName(activity.applicationInfo.packageName, activity.name);
            shareIntent.addCategory(Intent.CATEGORY_LAUNCHER);
            shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
            shareIntent.setComponent(name);
            context.startActivity(shareIntent);
            break;
        }
    }

获取错误日志

07-19 21:26:30.320: E/AndroidRuntime(4974): FATAL EXCEPTION: main
07-19 21:26:30.320: E/AndroidRuntime(4974): java.lang.RuntimeException: Unable to start activity ComponentInfo{fb.app/fb.app.MainActivity}: java.lang.NullPointerException
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2182)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2207)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.app.ActivityThread.access$600(ActivityThread.java:139)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1205)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.os.Handler.dispatchMessage(Handler.java:99)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.os.Looper.loop(Looper.java:137)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.app.ActivityThread.main(ActivityThread.java:4899)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at java.lang.reflect.Method.invokeNative(Native Method)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at java.lang.reflect.Method.invoke(Method.java:511)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at dalvik.system.NativeStart.main(Native Method)
07-19 21:26:30.320: E/AndroidRuntime(4974): Caused by: java.lang.NullPointerException
07-19 21:26:30.320: E/AndroidRuntime(4974):     at fb.app.MainActivity.onCreate(MainActivity.java:54)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.app.Activity.performCreate(Activity.java:5008)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
07-19 21:26:30.320: E/AndroidRuntime(4974):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2136)
07-19 21:26:30.320: E/AndroidRuntime(4974):     ... 11 more
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1 回答 1

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您不能从共享意图中过滤任何应用程序。如果您仍然想这样做，请使用 Facebook SDK。

于 2013-07-19T16:55:05.040 回答