Question

如果我想从原生相机捕捉图像，我可以这样做：

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
        intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
        startActivityForResult(intent, IMAGE_CAPTURE);

如果我想从图库中获取图片，我可以这样做：

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

我想知道如何将上述两者放在一起这意味着从画廊或捕捉照片获取图像 Select an action

是否有任何示例代码可以执行此操作？感谢。

Answer 1

如果您想从Camera或Gallery Intent Together拍照，请查看以下链接。同样的问题也发布在这里。

Capturing image from gallery & camera in android

更新后的代码：

检查下面的代码，在这段代码中你不想进入listview，但它在dialogBox中给出了选项，从Gallary OR Camera中选择图像。

public class UploadImageActivity extends Activity {
ImageView img_logo;
protected static final int CAMERA_REQUEST = 0;
protected static final int GALLERY_PICTURE = 1;
private Intent pictureActionIntent = null;
Bitmap bitmap;

    String selectedImagePath;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main1);

    img_logo= (ImageView) findViewById(R.id.imageView1);
    img_logo.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            startDialog();
        }

    });
}

private void startDialog() {
    AlertDialog.Builder myAlertDialog = new AlertDialog.Builder(
            getActivity());
    myAlertDialog.setTitle("Upload Pictures Option");
    myAlertDialog.setMessage("How do you want to set your picture?");

    myAlertDialog.setPositiveButton("Gallery",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface arg0, int arg1) {
                    Intent pictureActionIntent = null;

                    pictureActionIntent = new Intent(
                            Intent.ACTION_PICK,
                            android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                     startActivityForResult(
                            pictureActionIntent,
                            GALLERY_PICTURE);

                }
            });

    myAlertDialog.setNegativeButton("Camera",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface arg0, int arg1) {

                    Intent intent = new Intent(
                            MediaStore.ACTION_IMAGE_CAPTURE);
                    File f = new File(android.os.Environment
                            .getExternalStorageDirectory(), "temp.jpg");
                    intent.putExtra(MediaStore.EXTRA_OUTPUT,
                            Uri.fromFile(f));

                     startActivityForResult(intent,
                            CAMERA_REQUEST);

                }
            });
    myAlertDialog.show();
}

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

    super.onActivityResult(requestCode, resultCode, data);

    bitmap = null;
    selectedImagePath = null;

    if (resultCode == RESULT_OK && requestCode == CAMERA_REQUEST) {

        File f = new File(Environment.getExternalStorageDirectory()
                .toString());
        for (File temp : f.listFiles()) {
            if (temp.getName().equals("temp.jpg")) {
                f = temp;
                break;
            }
        }

        if (!f.exists()) {

            Toast.makeText(getBaseContext(),

            "Error while capturing image", Toast.LENGTH_LONG)

            .show();

            return;

        }

        try {

            bitmap = BitmapFactory.decodeFile(f.getAbsolutePath());

            bitmap = Bitmap.createScaledBitmap(bitmap, 400, 400, true);

            int rotate = 0;
            try {
                ExifInterface exif = new ExifInterface(f.getAbsolutePath());
                int orientation = exif.getAttributeInt(
                        ExifInterface.TAG_ORIENTATION,
                        ExifInterface.ORIENTATION_NORMAL);

                switch (orientation) {
                case ExifInterface.ORIENTATION_ROTATE_270:
                    rotate = 270;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_180:
                    rotate = 180;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_90:
                    rotate = 90;
                    break;
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            Matrix matrix = new Matrix();
            matrix.postRotate(rotate);
            bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(),
                    bitmap.getHeight(), matrix, true);



            img_logo.setImageBitmap(bitmap);
            //storeImageTosdCard(bitmap);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    } else if (resultCode == RESULT_OK && requestCode == GALLERY_PICTURE) {
        if (data != null) {

            Uri selectedImage = data.getData();
            String[] filePath = { MediaStore.Images.Media.DATA };
            Cursor c = getContentResolver().query(selectedImage, filePath,
                    null, null, null);
            c.moveToFirst();
            int columnIndex = c.getColumnIndex(filePath[0]);
            selectedImagePath = c.getString(columnIndex);
            c.close();

            if (selectedImagePath != null) {
                txt_image_path.setText(selectedImagePath);
            }

            bitmap = BitmapFactory.decodeFile(selectedImagePath); // load
            // preview image
            bitmap = Bitmap.createScaledBitmap(bitmap, 400, 400, false);



            img_logo.setImageBitmap(bitmap);

        } else {
            Toast.makeText(getApplicationContext(), "Cancelled",
                    Toast.LENGTH_SHORT).show();
        }
    }

}


}

同时添加pemission：

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

 <uses-feature
    android:name="android.hardware.camera.autofocus"
    android:required="false" />
<uses-feature
    android:name="android.hardware.camera"
    android:required="false" />

将图像存储到SD卡：

private void storeImageTosdCard(Bitmap processedBitmap) {
    try {
        // TODO Auto-generated method stub

        OutputStream output;
        // Find the SD Card path
        File filepath = Environment.getExternalStorageDirectory();
        // Create a new folder in SD Card
        File dir = new File(filepath.getAbsolutePath() + "/appName/");
        dir.mkdirs();

        String imge_name = "appName" + System.currentTimeMillis()
                + ".jpg";
        // Create a name for the saved image
        File file = new File(dir, imge_name);
        if (file.exists()) {
            file.delete();
            file.createNewFile();
        } else {
            file.createNewFile();

        }

        try {

            output = new FileOutputStream(file);

            // Compress into png format image from 0% - 100%
            processedBitmap
                    .compress(Bitmap.CompressFormat.PNG, 100, output);
            output.flush();
            output.close();

            int file_size = Integer
                    .parseInt(String.valueOf(file.length() / 1024));
            System.out.println("size ===>>> " + file_size);
            System.out.println("file.length() ===>>> " + file.length());

            selectedImagePath = file.getAbsolutePath();



        }

        catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

Answer 2

假设您有两个意图。一个会打开相机，一个会打开画廊。我将在示例代码中将这些cameraIntent和gallerIntent称为。您可以使用意图选择器来结合这两个：

科特林：

val chooser = Intent.createChooser(galleryIntent, "Some text here")
chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, arrayOf(cameraIntent))
startActivityForResult(chooser, requestCode)

Java ：

Intent chooser = Intent.createChooser(galleryIntent, "Some text here");
chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { cameraIntent });
startActivityForResult(chooser, requestCode);

这是您所询问的如何将两者组合在一起（而不必创建自己的UI /对话框）。

Answer 3

如果您想要显示手机中安装的所有可以处理相机，图库，Dropbox等照片的应用程序

您可以执行以下操作：

1.-询问所有可用的意图：

    Intent camIntent = new Intent("android.media.action.IMAGE_CAPTURE");
    Intent gallIntent=new Intent(Intent.ACTION_GET_CONTENT);
    gallIntent.setType("image/*"); 

    // look for available intents
    List<ResolveInfo> info=new ArrayList<ResolveInfo>();
    List<Intent> yourIntentsList = new ArrayList<Intent>();
    PackageManager packageManager = context.getPackageManager();
    List<ResolveInfo> listCam = packageManager.queryIntentActivities(camIntent, 0);
    for (ResolveInfo res : listCam) {
        final Intent finalIntent = new Intent(camIntent);
        finalIntent.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
        yourIntentsList.add(finalIntent);
        info.add(res);
    }
    List<ResolveInfo> listGall = packageManager.queryIntentActivities(gallIntent, 0);
    for (ResolveInfo res : listGall) {
        final Intent finalIntent = new Intent(gallIntent);
        finalIntent.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
        yourIntentsList.add(finalIntent);
        info.add(res);
    }

2.-显示包含项目列表的自定义对话框：

    AlertDialog.Builder dialog = new AlertDialog.Builder(context);
    dialog.setTitle(context.getResources().getString(R.string.select_an_action));
    dialog.setAdapter(buildAdapter(context, activitiesInfo),
            new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {
                    Intent intent = intents.get(id);
                    context.startActivityForResult(intent,1);
                }
            });

    dialog.setNeutralButton(context.getResources().getString(R.string.cancel),
            new android.content.DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                }
            });
    dialog.show();

这是一个完整的例子：https://gist.github.com/felixgborrego/7943560

Answer 4

在XML布局中创建一个按钮，然后添加属性android:onClick="takeAPicture" 然后在主活动中创建一个onClick属性中具有相同名称的方法。

public void takeAPicture(View view){
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
        intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
        startActivityForResult(intent, IMAGE_CAPTURE);
}

当您想要从图库中获取图像时，只需另外一种方法：

public void getImageFromGallery(View view) {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent,
                    "Select Picture"), SELECT_PICTURE);
}

Answer 5

我想我之前遇到过你的情况。我们的想法是，我们将创建一个带有可选项的单项列表警告对话框，每个项目将执行由您自己的意图定义的唯一功能。如果您想要项目列表中每个元素的图标，则需要做更多的工作。希望它会有所帮助。

    String title = "Open Photo";
    CharSequence[] itemlist ={"Take a Photo",
                  "Pick from Gallery",
                  "Open from File"};

    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setIcon(R.drawable.icon_app);
    builder.setTitle(title);
    builder.setItems(itemlist, new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            switch (which) {
            case 0:// Take Photo
                // Do Take Photo task here
                break;
            case 1:// Choose Existing Photo
                // Do Pick Photo task here
                break;
            case 2:// Choose Existing File
                // Do Pick file here
                break;
            default:
                break;
            }
        }
    });
    AlertDialog alert = builder.create();
    alert.setCancelable(true);
    alert.show();

Answer 6

您可以使用IntentMapnip将意图合并在一起并将其显示给用户。

List<ResolveIntent> resolveIntentList = mergeIntents(this, MediaIntents.newSelectPictureIntent(), MediaIntents.cameraIntent());
LaunchIntent.withButtomSheetAsList(this, resolveIntentList, "launch using", new ResolvedIntentListener<ResolveIntent>() {
            @Override
            public void onIntentSelected(ResolveIntent resolveIntent) {

            }
        });

您可以在一次通话中合并您想要的任意数量。

Answer 7

＆＃13;

public static Intent getPickImageIntent(Context context) {
    Intent chooserIntent = null;

    List<Intent> intentList = new ArrayList<>();

    Intent pickIntent = new Intent(Intent.ACTION_PICK,
            android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    takePhotoIntent.putExtra("return-data", true);
    takePhotoIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(getTempFile(context)));
    intentList = addIntentsToList(context, intentList, pickIntent);
    intentList = addIntentsToList(context, intentList, takePhotoIntent);

    if (intentList.size() > 0) {
        chooserIntent = Intent.createChooser(intentList.remove(intentList.size() - 1),
                context.getString(R.string.pick_image_intent_text));
        chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentList.toArray(new Parcelable[]{}));
    }

    return chooserIntent;
}

private static List<Intent> addIntentsToList(Context context, List<Intent> list, Intent intent) {
    List<ResolveInfo> resInfo = context.getPackageManager().queryIntentActivities(intent, 0);
    for (ResolveInfo resolveInfo : resInfo) {
        String packageName = resolveInfo.activityInfo.packageName;
        Intent targetedIntent = new Intent(intent);
        targetedIntent.setPackage(packageName);
        list.add(targetedIntent);
    }
    return list;
}

＆＃13;

Answer 8

实际上，您的对话框标题为“选择动作”，意味着该对话框实际上是一个Intent选择器。不是用户自定义对话框。每一项都代表一个意图。

public void click(View view) {
        File file = getExternalFilesDir(Environment.DIRECTORY_DCIM);
        Uri cameraOutputUri = Uri.fromFile(file);
        Intent intent = getPickIntent(cameraOutputUri);
        startActivityForResult(intent, -1);
    }

    private Intent getPickIntent(Uri cameraOutputUri) {
        final List<Intent> intents = new ArrayList<Intent>();

        if (true) {
            intents.add(new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI));
        }

        if (true) {
            setCameraIntents(intents, cameraOutputUri);
        }

        if (intents.isEmpty()) return null;
        Intent result = Intent.createChooser(intents.remove(0), null);
        if (!intents.isEmpty()) {
            result.putExtra(Intent.EXTRA_INITIAL_INTENTS, intents.toArray(new Parcelable[] {}));
        }
        return result;


    }

    private void setCameraIntents(List<Intent> cameraIntents, Uri output) {
        final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        final PackageManager packageManager = getPackageManager();
        final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
        for (ResolveInfo res : listCam) {
            final String packageName = res.activityInfo.packageName;
            final Intent intent = new Intent(captureIntent);
            intent.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
            intent.setPackage(packageName);
            intent.putExtra(MediaStore.EXTRA_OUTPUT, output);
            cameraIntents.add(intent);
        }
    }

如果在操作系统> = 23上运行，您可能需要自己解决权限

这是我的演示：（由于操作系统不同，外观也有所不同）

Android如何将Camera或Gallery Intent一起调用

8 个答案: