Question

我正在尝试在我的应用中使用相机类。我只想点击图片并在imageview上设置，然后将其发布到某个网址上。发布网址工作正常但有时问题发生在点击任何图片并恢复到我导航到相机应用程序的相同活动。它在HTC野火（2.2版本）上工作正常，但有时会出现异常（失败几率为1/25）但是当我在索尼xperia miro或三星标签（4.0版本）上测试时，它会多次出现相同的异常（失败几率为20/25）。我没有得到问题的存在，因为有时应用程序运行顺利，没有任何异常，但4.0或更高版本，它强制关闭多次，但有时工作正常。

例外是：java.lang.RuntimeException: Unable to resume activity {fable.eventippo/fable.eventippo.EventsIppoPaymentActivity}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=tabHome, request=1, result=-1, data=Intent { dat=content://media/external/images/media/17271 }} to activity {fable.eventippo/fable.eventippo.EventsIppoPaymentActivity}: java.lang.ClassCastException: fable.eventippo.Home cannot be cast to fable.eventippo.AddEvent

此处提供完整的代码。

按钮Onclick。

browse = (Button) findViewById(R.id.browse);
    browse.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            final CharSequence[] items = { "Camera", "Gallery" };
            AlertDialog.Builder builder = new AlertDialog.Builder(
                    getParent());
            builder.setTitle("Browse From");
            builder.setItems(items, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int item) {
                    if (items[item] == "Camera") {
                        PackageManager pm = getPackageManager();

                        if (pm.hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
                            Intent i = new Intent(
                                    android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

                            i.putExtra(MediaStore.EXTRA_OUTPUT,
                                    MyFileContentProviders.CONTENT_URI);

                            getParent().startActivityForResult(i,
                                    CAMERA_REQUEST);

                        } else {

                            Toast.makeText(getParent(),
                                    "Camera is not available",
                                    Toast.LENGTH_LONG).show();

                        }
                    } else if (items[item] == "Gallery") {
                        try {

                            Intent intent = new Intent();
                            intent.setType("image/*");
                            intent.setAction(Intent.ACTION_GET_CONTENT);
                            getParent().startActivityForResult(
                                    Intent.createChooser(intent,
                                            "Select Picture"),         PICK_IMAGE);
                        } catch (Exception e) {
                            Toast.makeText(getParent(), e.getMessage(),
                                    Toast.LENGTH_LONG).show();
                            Log.e(e.getClass().getName(), e.getMessage(), e);
                        }

                    }
                }

            });
            AlertDialog alert = builder.create();
            alert.show();

        }
    });

关于活动结果：

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    Bundle bn = data.getExtras();
    switch (requestCode) {
    case PICK_IMAGE:
        if (resultCode == Activity.RESULT_OK) {
            Uri selectedImageUri = data.getData();
            String filepath = null;

            try {
                // OI FILE Manager
                String filemanagerstring = selectedImageUri.getPath();
                // MEDIA GALLERY
                String selectedImagePath = getPath(selectedImageUri);
                // logo.setImageURI(selectedImageUri);
                if (selectedImagePath != null) {
                    filepath = selectedImagePath;
                } else if (filemanagerstring != null) {
                    filepath = filemanagerstring;
                } else {
                    Toast.makeText(getApplicationContext(), "Unknown path",
                            Toast.LENGTH_LONG).show();
                    Log.e("Bitmap", "Unknown path");
                }
                if (filepath != null) {
                    // /upload.setText(filepath);
                    decodeFile(filepath);
                } else {
                    // filePath = null;
                    bitmap = null;
                }
            } catch (Exception e) {
                Toast.makeText(getApplicationContext(), "Internal error",
                        Toast.LENGTH_LONG).show();
                Log.e(e.getClass().getName(), e.getMessage(), e);
            }
        }
        break;
    case CAMERA_REQUEST:
        if (resultCode == Activity.RESULT_OK) {

            File out = new File(getFilesDir(), "newImage.jpg");

            if (!out.exists()) {

                Toast.makeText(getBaseContext(),

                "Error while capturing image", Toast.LENGTH_LONG)

                .show();

                return;

            }

            String filepath = out.getAbsolutePath().toString();
            decodeFile(filepath);

        }
        break;
    default:
    }

完整例外显示在以下图片 Exception is shown here

上

如果您还有其他需要，请告诉我。

提前致谢

等待回答

Answer 1

Takepicture按钮onClickListener：

TakePicture.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            File file = new File(Environment.getExternalStorageDirectory().getPath(), "MyPic-"+ System.currentTimeMillis() + ".jpg");
            SelectedImage = Uri.fromFile(file);
            intent.putExtra(MediaStore.EXTRA_OUTPUT, SelectedImage);
            startActivityForResult(intent,CAMERA_PIC_REQUEST);

        }
    });

选择From Gallery按钮onClickListener：

SelectfromGallery.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

             Intent intent = new Intent();
             intent.setType("image/*");
             intent.setAction(Intent.ACTION_GET_CONTENT);
             startActivityForResult(Intent.createChooser(intent,"Select Picture"), RESULT_LOAD_IMAGE);

        }
    });

<强> onActivityResult：

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

    if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {

        SelectedImage = data.getData();
        String filePath = null;

        try {
            // IO FILE Manager
            String filemanagerstring = SelectedImage.getPath();

            // MEDIA GALLERY
            String selectedImagePath = getPath(SelectedImage);

            if (selectedImagePath != null) {
                filePath = selectedImagePath;
            } else if (filemanagerstring != null) {
                filePath = filemanagerstring;
            } else {
                Toast.makeText(getApplicationContext(), "Unknown path",
                        Toast.LENGTH_LONG).show();
                Log.e("Bitmap", "Unknown path");
            }

            if (filePath != null) {
                decodeFile(filePath);   
            } else {
                bitmap = null;
            }
            FROM_GALLERY = true;

        } catch (Exception e) {
            Log.e("Uploaderror", e.getLocalizedMessage());
        }
    }
    else if(requestCode==CAMERA_PIC_REQUEST && resultCode == RESULT_OK){

        /*//SelectedImage = data.getData();
        Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
        ProfilePic.setImageBitmap(thumbnail);*/
        String filePath = null;
        try {
            // OI FILE Manager
            String filemanagerstring = SelectedImage.getPath();

            // MEDIA GALLERY
            String selectedImagePath = getPath(SelectedImage);

            if (selectedImagePath != null) {
                filePath = selectedImagePath;
            } else if (filemanagerstring != null) {
                filePath = filemanagerstring;
            } else {
                Toast.makeText(getApplicationContext(), "Unknown path",
                        Toast.LENGTH_LONG).show();
                Log.e("Bitmap", "Unknown path");
            }

            if (filePath != null) {
                decodeFile(filePath);
                FROM_GALLERY = false;
            } else {
                bitmap = null;
            }

        } catch (Exception e) {
            Log.e("error:", e.getLocalizedMessage());
        }

    }
    else if (resultCode == Activity.RESULT_CANCELED) 
      {
        Log.e("STATUS:", "Selecting picture cancelled"); 
      } 
}

decodeFile方法：

   public void decodeFile(String filePath) {
    // Decode image size
    BitmapFactory.Options o = new BitmapFactory.Options();
    o.inJustDecodeBounds = true;
    BitmapFactory.decodeFile(filePath, o);

    // The new size we want to scale to
    final int REQUIRED_SIZE = 1024;

    // Find the correct scale value. It should be the power of 2.
    int width_tmp = o.outWidth, height_tmp = o.outHeight;
    int scale = 1;
    while (true) {
        if (width_tmp < REQUIRED_SIZE && height_tmp < REQUIRED_SIZE)
            break;
        width_tmp /= 2;
        height_tmp /= 2;
        scale *= 2;
    }

    // Decode with inSampleSize
    BitmapFactory.Options o2 = new BitmapFactory.Options();
    o2.inSampleSize = scale;
    bitmap = BitmapFactory.decodeFile(filePath, o2);

    ProfilePic.setImageBitmap(bitmap);
}

你去吧。我完成该目标的完整代码。由于我的设备有限，我无法进行彻底的测试。所以，不能肯定地说这可以在所有设备上运行。如果您找到解决问题的方法，或者此代码有效，请告知我们。谢谢。快乐的编码。

java.lang.RuntimeException：无法恢复活动{packagename.classname}：

1 个答案: