我想製作一個應用程序，只能打開前置攝像頭，如何使用intent？如何在Android中使用Intent打開前置攝像頭？

private void captureImage() { 
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 

    fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); 

    intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); 
    intent.putExtra("android.intent.extras.CAMERA_FACING", 1); 

    // start the image capture Intent 
    startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE); 
}

來源

2016-09-10 Abhishek Joshi

你會發布開放前置攝像頭的完整解決方案嗎？ –

try this: 

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
intent.putExtra("android.intent.extras.CAMERA_FACING", 1); 
       File outPutFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + Util.SD_CARD_PATH); 
       if (!outPutFile.exists()) { 
        outPutFile.mkdirs(); 
       } 
       capturedImageUri = Uri.fromFile(File.createTempFile("packagename" + System.currentTimeMillis(), ".jpg", outPutFile)); 

       intent.putExtra(MediaStore.EXTRA_OUTPUT, capturedImageUri); 
       startActivityForResult(intent, Util.REQUEST_CAMERA);

來源

2016-09-10 06:43:51

什麼是capturedImageUri？ –

它和你的文件一樣。它會將點擊的圖像存儲在該uri –

ok.But Util不解決。 –

的Java

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
    Uri photoUri = Uri.fromFile(getOutputPhotoFile()); 
    intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri); 
    intent.putExtra("android.intent.extras.CAMERA_FACING", 1); 
    startActivityForResult(intent, CAMERA_PHOTO_REQUEST_CODE);

其他/備用解決方案

private Camera openFrontFacingCameraGingerbread() { 
    int cameraCount = 0; 
    Camera cam = null; 
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo(); 
    cameraCount = Camera.getNumberOfCameras(); 
    for (int camIdx = 0; camIdx < cameraCount; camIdx++) { 
     Camera.getCameraInfo(camIdx, cameraInfo); 
     if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { 
      try { 
       cam = Camera.open(camIdx); 
      } catch (RuntimeException e) { 
       Log.e(TAG, "Camera failed to open: " + e.toString()); 
      } 
     } 
    } 

    return cam; 
}

在AndroidManifest.xml文件中添加這些權限

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