从Android摄像头意图问题图像 [英] image from camera intent issue in android

问题描述

我的Facebook集成与Android，我想采取一个光度计时，将它保存到SD卡，然后将其上传到Facebook。

I am integrating facebook with android and I want when taking a phot , save it to sdcard and then upload it to facebook.

下面是我的code：

photo_up=(Button)findViewById(R.id.camera_foto_button);
            photo_up.setOnClickListener(new View.OnClickListener() {
                   public void onClick(View v) {
                       final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);  
                       intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(getTempFile(PlaceScreen.this)) );   
                       startActivityForResult(intent,CAMERA_REQUEST); 
                   }
                });

 private File getTempFile(Context context){  
          //it will return /sdcard/image.tmp  
          final File path = new File( Environment.getExternalStorageDirectory(), context.getPackageName() );  
          if(!path.exists()){  
            path.mkdir();  
          }  
          return new File(path, "image.png");  
        } 

和OnActivity结果

and the OnActivity Result

protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
    switch(requestCode){
                case CAMERA_REQUEST:{
                    final File file = getTempFile(this);  
                    try {  
                      bmp = MediaStore.Images.Media.getBitmap(this.getContentResolver(), Uri.fromFile(file) );  
                      // do whatever you want with the bitmap (Resize, Rename, Add To Gallery, etc)  
                    } catch (FileNotFoundException e) {  
                      e.printStackTrace();  
                    } catch (IOException e) {  
                      e.printStackTrace();  
                    }  


                    ByteArrayOutputStream stream = new ByteArrayOutputStream();        
                    bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);         
                    byteArray = stream.toByteArray(); // convert camera photo to byte array  
                    Bundle params = new Bundle();       
                    params.putByteArray("picture", byteArray);      
                    params.putString("message", "Have fun");       
                    Utility.mAsyncRunner.request("me/photos", params,
                            "POST", new PhotoUploadListener(), null);
                    break;
                }

那么会发生什么情况是这样的：摄像头打开，imagae捕获并保存，但我得到一个强制关闭，它是没有上传的FB

So what happens is this: Camera opens, imagae captured and saved but I get a force close and it is not uploaded on fb.

我检查我的电话了。 logcat的是在这里：

I checked it on my phone,too. Logcat is here:

05-31 02:50:19.437: E/AndroidRuntime(2470): FATAL EXCEPTION: main
05-31 02:50:19.437: E/AndroidRuntime(2470): java.lang.RuntimeException: Unable to resume activity {com.myname.package/com.myname.package.PlaceScreen}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1888, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.myname.package/com.myname.package.PlaceScreen}: java.lang.NullPointerException
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2124)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2139)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1672)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:2836)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread.access$1600(ActivityThread.java:117)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.os.Handler.dispatchMessage(Handler.java:99)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.os.Looper.loop(Looper.java:130)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread.main(ActivityThread.java:3687)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at java.lang.reflect.Method.invokeNative(Native Method)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at java.lang.reflect.Method.invoke(Method.java:507)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at dalvik.system.NativeStart.main(Native Method)
05-31 02:50:19.437: E/AndroidRuntime(2470): Caused by: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1888, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.myname.package/com.myname.package.PlaceScreen}: java.lang.NullPointerException
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread.deliverResults(ActivityThread.java:2536)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2111)
05-31 02:50:19.437: E/AndroidRuntime(2470):     ... 13 more
05-31 02:50:19.437: E/AndroidRuntime(2470): Caused by: java.lang.NullPointerException
05-31 02:50:19.437: E/AndroidRuntime(2470):     at com.myname.package.PlaceScreen.onActivityResult(PlaceScreen.java:325)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.Activity.dispatchActivityResult(Activity.java:3908)
05-31 02:50:19.437: E/AndroidRuntime(2470):     at android.app.ActivityThread.deliverResults(ActivityThread.java:2532)
05-31 02:50:19.437: E/AndroidRuntime(2470):     ... 14 more

编辑：

好吧我BMP，其中为空。这是为什么？ IUS什么错？

Ok my bmp where is null. Why is that? What ius wrong?

bmp = MediaStore.Images.Media.getBitmap(this.getContentResolver(), Uri.fromFile(file) );  
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream); 

任何人都可以找出为什么我的BMP为空，而我所看到的图像在画廊。这意味着，像正常拍摄，但没有得到作为BMP = MediaStore.Images.Media

can anyone find out why my bmp is null while I can see the image in the gallery. That means that image is taken normally but nothing gets as a result of bmp=MediaStore.Images.Media

推荐答案

虽然使用通用code，适用于净通话摄像头和拍照，并retrive，我当时同样面临着三星设备的一些问题出错未能提供结果ResultInfo ，但没有找到任何解决办法可能是其因任何API等级或设备扶养。

While using the generic code available on net to call camera and take photo and retrive it, I faced some problem in SAMSUNG device at that time the same error occured Failure delivering result ResultInfo and couldn't find any solution may be its because of any API Level or Device dependancy.

不过，要克服它，我写我的code另一种方式做任务，code是在这里：

But to overcome it I wrote my code another way to do the task, The code is here:

1）来调用摄像机

        String _path = Environment.getExternalStorageDirectory()
        + File.separator + "TakenFromCamera.png";
        File file = new File(_path);
        Uri outputFileUri = Uri.fromFile(file);
        Intent intent = new Intent(
        android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
        startActivityForResult(intent, 1212);

2）在ActivityResult得到位图

2) In ActivityResult to get Bitmap

            if (requestCode == 1212) {
                String _path = Environment.getExternalStorageDirectory()
                + File.separator + "TakenFromCamera.png";
                mBitmap = BitmapFactory.decodeFile(_path);
                if (mBitmap == null) {
                    // bitmap still null
                } else {
                    // set bitmap in imageview
                }
            }

这篇关于从Android摄像头意图问题图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！