Question

我在测试手机中收到了“没有应用可以执行此操作”的消息，但在平板电脑中，它运行正常。我的测试手机是Android版本4.2.2，我的平板电脑是Android版本4.4.4。这是我的代码。

 Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
 intent.addCategory(Intent.CATEGORY_OPENABLE);
 intent.setType("*/*");
 String[] mimetypes = {"application/pdf","text/plain","application/vnd.openxmlformats-officedocument.spreadsheetml.sheet","application/vnd.openxmlformats-officedocument.wordprocessingml.document"};
 intent.putExtra(Intent.EXTRA_MIME_TYPES, mimetypes);
 startActivityForResult(Intent.createChooser(intent, "Select File"), 3);

如果我换了这样的话，

     startActivityForResult(intent, 3);

我的手机出现了这个错误，但平板电脑仍然没问题。

  03-12 09:22:40.015: E/test(10739): Exception
  03-12 09:22:40.026: E/AndroidRuntime(10739): FATAL EXCEPTION: main
  03-12 09:22:40.026: E/AndroidRuntime(10739): java.lang.IllegalStateException: Could not execute method of the activity
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.view.View$1.onClick(View.java:3688)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.view.View.performClick(View.java:4293)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.view.View$PerformClick.run(View.java:17535)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.os.Handler.handleCallback(Handler.java:725)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.os.Handler.dispatchMessage(Handler.java:92)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.os.Looper.loop(Looper.java:153)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.app.ActivityThread.main(ActivityThread.java:5299)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at java.lang.reflect.Method.invokeNative(Native Method)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at java.lang.reflect.Method.invoke(Method.java:511)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at dalvik.system.NativeStart.main(Native Method)
  03-12 09:22:40.026: E/AndroidRuntime(10739): Caused by: java.lang.reflect.InvocationTargetException
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at java.lang.reflect.Method.invokeNative(Native Method)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at java.lang.reflect.Method.invoke(Method.java:511)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.view.View$1.onClick(View.java:3683)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  ... 11 more
  03-12 09:22:40.026: E/AndroidRuntime(10739): Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.OPEN_DOCUMENT cat=[android.intent.category.OPENABLE] typ=*/* (has extras) }
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1628)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.app.Instrumentation.execStartActivity(Instrumentation.java:1423)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.app.Activity.internalStartActivityForResult(Activity.java:3427)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.app.Activity.access$200(Activity.java:660)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.app.Activity$2.onStartActivity(Activity.java:3417)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.app.Activity.startActivityForBusiness(Activity.java:5441)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.app.Activity.startActivityForResult(Activity.java:3413)
  03-12 09:22:40.026: E/AndroidRuntime(10739):  at android.app.Activity.startActivityForResult(Activity.java:3367)

这应该适用于两种设备，我该怎么办。请帮助我。!!

Answer 1

仅在安装了Android 4.4（KitKat）及更高版本的设备上支持Intent Intent.ACTION_OPEN_DOCUMENT。

查看Storage Access Framework文档，特别是ACTION_OPEN_DOCUMENT上的文档。

Answer 2

在Android 4.3或更低版本中，使用ACTION_PICK或ACTION_GET_CONTENT作为替代。

此外，当您调用内置＆＃34; ACTION＆＃34;时，您必须验证是否有多个活动才能接收它，否则您的应用可能会崩溃。使用以下代码段执行此操作：

PackageManager packageManager = getPackageManager();
List<ResolveInfo> activities = packageManager.queryIntentActivities(intent, 0);
boolean isIntentSafe = activities.size() > 0;
if (isIntentSafe) {
    startActivity(intent);
}

没有应用程序可以在Android中执行此操作？

2 个答案: