Question

我有这些代码。相机打开，照片拍摄，但当我点击“确定”按钮时，什么也没发生。回到之前活动的唯一方法是点击“x”按钮，这对我没用:)。问题是什么？（onActivityResult方法还没有完成。）（我曾经使用这个算法与 Android.provider.MediaStore.ACTION_IMAGE_CAPTURE 意图。一切都好。我不知道为什么我现在有问题。）< / p>

public void onClick(View v) {

            Intent getCameraImage = new Intent("android.media.action.IMAGE_CAPTURE");
            db.open();
            Cursor cr = db.getAllRecords();
            int count = cr.getCount();

            db.close();

            File cameraFolder;

            if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))
                cameraFolder = new File(android.os.Environment.getExternalStorageDirectory(),"TSFC");
            else
                cameraFolder= ShowMessagesPage.this.getCacheDir();
            if(!cameraFolder.exists())
                cameraFolder.mkdirs();

            File photo = new File(Environment.getExternalStorageDirectory(), "TSFC/" + (count + 1) + ".jpg");
            getCameraImage.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photo));

            initialURI = Uri.fromFile(photo);

            startActivityForResult(getCameraImage, CAMERA_RESULT);
        }});}

protected void onActivityResult(int requestCode, int resultCode,
          Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);

        if (resultCode == RESULT_OK) {
            Bundle extras = intent.getExtras();
            photo = (Uri) extras.get("data");


        }
      }

Answer 1

好的，众所周知的Bug，

只需添加此代码行photo.createNewFile();

即可

类似的东西，

File photo = new File(Environment.getExternalStorageDirectory(), "TSFC/" + (count + 1) + ".jpg");
photo.createNewFile();
getCameraImage.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photo));

也别忘了，

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

让我知道你的进步。

Answer 2

使用onActivityResult(..)方法以这种方式取回结果。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    if (requestCode == CAMERA_RESULT) {
        // Make sure the request was successful

            if (resultCode == RESULT_OK) {
            Bundle extras = intent.getExtras();
            photo = (Uri) extras.get("data");

        }
    }
}

我无法使用ONActivityResult返回上一个活动

2 个答案: