Question

谁可以帮我查看这个bug，在我的活动中我使用startActivityForResult（使用相机拍摄图像）。拍照后，我的活动无法恢复。：（

java.lang.RuntimeException: Unable to resume activity {com.example/com.example.view.main.PersonActivity}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=998, result=-1, data=null} to activity {com.example/com.example.view.main.PersonActivity}: java.lang.NullPointerException

--------- Stack trace ---------

    android.app.ActivityThread.performResumeActivity(ActivityThread.java:2458)
    android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2486)
    android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2000)
    android.app.ActivityThread.access$600(ActivityThread.java:128)
    android.app.ActivityThread$H.handleMessage(ActivityThread.java:1161)
    android.os.Handler.dispatchMessage(Handler.java:99)
    android.os.Looper.loop(Looper.java:137)
    android.app.ActivityThread.main(ActivityThread.java:4514)
    java.lang.reflect.Method.invokeNative(Native Method)
    java.lang.reflect.Method.invoke(Method.java:511)
    com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
    com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
    dalvik.system.NativeStart.main(Native Method)
-------------------------------

--------- Cause ---------

java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=998, result=-1, data=null} to activity {com.example/com.example.view.main.PersonActivity}: java.lang.NullPointerException

    android.app.ActivityThread.deliverResults(ActivityThread.java:2994)
    android.app.ActivityThread.performResumeActivity(ActivityThread.java:2445)
    android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2486)
    android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2000)
    android.app.ActivityThread.access$600(ActivityThread.java:128)
    android.app.ActivityThread$H.handleMessage(ActivityThread.java:1161)
    android.os.Handler.dispatchMessage(Handler.java:99)
    android.os.Looper.loop(Looper.java:137)
    android.app.ActivityThread.main(ActivityThread.java:4514)
    java.lang.reflect.Method.invokeNative(Native Method)
    java.lang.reflect.Method.invoke(Method.java:511)
    com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
    com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
    dalvik.system.NativeStart.main(Native Method)
-------------------------------

在我的java代码中，在OnActivityResult

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    String filePath = "";
    switch (requestCode) {
    case MyActivity.RQ_SALE_TAKE_PHOTO:
        {
            if (resultCode == RESULT_OK) {
                if (data != null && data.getExtras() != null && data.getAction() != null) {
                    Bitmap tempBitmap = null;
                    tempBitmap = (Bitmap) data.getExtras().get("data");
                    //.....
                }
            } else {
                //DO SOMETHING HERE
            }
        }
        break;
    }
}

代码呼叫摄像头：

public static File takePhoto(Activity sender, int requestCode) {
    System.gc();
    final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    String fileName = Constants.TEMP_IMG + "_" + DateUtils.getCurrentDateTimeWithFormat(null) + ".jpg";
    File retFile = new File(ExternalStorage.getTakenPhotoPath(sender), fileName);
    if (!retFile.exists())
        try {
            retFile.createNewFile();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(retFile));
    sender.startActivityForResult(intent, requestCode);
    return retFile;
}

任何人都可以帮我解释上述错误，以及如何解决此错误。

Answer 1

似乎返回意图“data”为空

确保使用startActivityForResult和默认的相机应用程序。

默认的Android相机应用程序仅在传回返回的Intent中的缩略图时才返回非空的intent。如果您传递带有要写入的URL的EXTRA_OUTPUT，它将返回一个空意图，并且图片位于您传入的URL中。

Answer 2

只需做startActivity。当您从其他launchactivity执行startActivityForResult时，您需要将setResult（）添加到您的活动中。

现在相机活动没有为您设置任何结果，并且它在onActivityResult函数中崩溃。

Answer 3

试试这个..

 Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(cameraIntent, requestCode);

Answer 4

试试这段代码：

try {
    Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
    File photo = new File(photoPath);
    intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photo));
    startActivityForResult(Intent.createChooser(intent, "Capture Image"),
                            MyActivity.RQ_SALE_TAKE_PHOTO);
} catch (Exception e) {
}

无法恢复活动，使用相机后应用程序崩溃

4 个答案: