Android相机意图

我需要将默认相机应用程序的意图，以使其拍照，保存并返回一个URI。 有没有办法做到这一点？

Answer 1

private static final int TAKE_PICTURE = 1; private Uri imageUri; public void takePhoto(View view) { Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); File photo = new File(Environment.getExternalStorageDirectory(), "Pic.jpg"); intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photo)); imageUri = Uri.fromFile(photo); startActivityForResult(intent, TAKE_PICTURE); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); switch (requestCode) { case TAKE_PICTURE: if (resultCode == Activity.RESULT_OK) { Uri selectedImage = imageUri; getContentResolver().notifyChange(selectedImage, null); ImageView imageView = (ImageView) findViewById(R.id.ImageView); ContentResolver cr = getContentResolver(); Bitmap bitmap; try { bitmap = android.provider.MediaStore.Images.Media .getBitmap(cr, selectedImage); imageView.setImageBitmap(bitmap); Toast.makeText(this, selectedImage.toString(), Toast.LENGTH_LONG).show(); } catch (Exception e) { Toast.makeText(this, "Failed to load", Toast.LENGTH_SHORT) .show(); Log.e("Camera", e.toString()); } } } } 

Answer 2

尝试以下我在这里find

 Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); startActivityForResult(intent, 0); @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == Activity.RESULT_OK && requestCode == 0) { String result = data.toURI(); // ... } } 

Answer 3

我花了几个小时才能完成这个工作。 这个代码几乎是来自developer.android.com的一个复制粘贴，只有很小的差别。

在AndroidManifest.xml请求这个权限：

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

在你的Activity ，首先定义这个：

 static final int REQUEST_IMAGE_CAPTURE = 1; private Bitmap mImageBitmap; private String mCurrentPhotoPath; private ImageView mImageView; 

然后在onClick激发这个Intent ：

 Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (cameraIntent.resolveActivity(getPackageManager()) != null) { // Create the File where the photo should go File photoFile = null; try { photoFile = createImageFile(); } catch (IOException ex) { // Error occurred while creating the File Log.i(TAG, "IOException"); } // Continue only if the File was successfully created if (photoFile != null) { cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile)); startActivityForResult(cameraIntent, REQUEST_IMAGE_CAPTURE); } } 

添加以下支持方法：

 private File createImageFile() throws IOException { // Create an image file name String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date()); String imageFileName = "JPEG_" + timeStamp + "_"; File storageDir = Environment.getExternalStoragePublicDirectory( Environment.DIRECTORY_PICTURES); File image = File.createTempFile( imageFileName, // prefix ".jpg", // suffix storageDir // directory ); // Save a file: path for use with ACTION_VIEW intents mCurrentPhotoPath = "file:" + image.getAbsolutePath(); return image; } 

然后收到结果：

 @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) { try { mImageBitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), Uri.parse(mCurrentPhotoPath)); mImageView.setImageBitmap(mImageBitmap); } catch (IOException e) { e.printStackTrace(); } } } 

使其工作的是MediaStore.Images.Media.getBitmap(this.getContentResolver(), Uri.parse(mCurrentPhotoPath)) ，它与developer.android.com中的代码不同。 原来的代码给了我一个FileNotFoundException 。

Answer 4

试试这个代码

 Intent photo= new Intent("android.media.action.IMAGE_CAPTURE"); startActivityForResult(photo, CAMERA_PIC_REQUEST);