android-camera

问题 I have an app with a WebView. There is a page with Upload Photo button so I use the openFileChooser. Sometimes I have a problem when the camera is chosen. The activity restarts and the webview is back on the beginning. How I can save the state of the activity? Please give an example (I saw that a good example of this would be useful). 回答1: You can save the Webview in Android Cache : Use WebView Setting : webView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK); This will help

问题 When I try to get image from camera or gallery, I get error. Here is a part of logcat: 06-27 05:51:47.297: E/dalvikvm-heap(438): Out of memory on a 35295376-byte allocation. 06-27 05:51:47.312: E/dalvikvm(438): Out of memory: Heap Size=108067KB, Allocated=71442KB, Limit=131072KB 06-27 05:51:47.312: E/dalvikvm(438): Extra info: Footprint=108067KB, Allowed Footprint=108067KB, Trimmed=56296KB 06-27 05:51:47.312: E/PowerManagerService(438): Excessive delay when setting lcd brightness: mLcdLight

问题 I am trying to use new camera api provided by android as camera2. But CameraManager manager = (CameraManager) getActivity().getSystemService(Context.CAMERA_SERVICE); showing error. Does any one have worked on this api. Have been searching for results for could not find any thing yet. 回答1: Binod, That will only works if your platform support API level 21 - that is the one come after Android L release. For a detailed explanation of how camera 2 API works, you may want to take a look at this

问题 I have to following code and I just want to open the flashlight in my Galaxy Nexus(4.0.2) and it failed to do so. public class welcome extends Activity { //MediaPlayer player; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.welcome); Camera cam = Camera.open(); Parameters p = cam.getParameters(); p.setFlashMode(Parameters.FLASH_MODE_TORCH); cam.setParameters(p); cam

问题 It seems com.android.camera.action.CROP isn't reliable, since it's an internal API and is not available on every device. However, I find this library quite practical. It works great on my Galaxy Nexus. Should I really be thinking on implementing my own solution? Am I taking too much a risk by using com.android.camera.action.CROP ? Moreover, in some devices, it opens up google + crop photo which crashes later. Finally, are there any open libraries out there I could use that would accomplish

问题 We have an app that works with all our supported Android phones "except Samsung Galaxy S5" . Our app uses the camera to take pictures at close range. We need torch mode ON the entire time we are focusing to take the picture. We check for supported parameters and set the values if supported. The params get set but the event either never gets fired or the camera is ignoring my settings. I tested using OpenCamera and their app is able to turn the torch on yet I cannot find the difference between

问题 I'm trying to get the picture into service from Camera. @Override public void onCreate() { super.onCreate(); //android.os.Debug.waitForDebugger(); myCamera=Camera.open(); SurfaceView dummy=new SurfaceView(getApplicationContext()); try { if(myCamera!=null) { myCamera.setPreviewDisplay(dummy.getHolder()); myCamera.setPreviewCallback(this); Log.i(TAG,"myCamera is not null"); } getFrames(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); Log.e(TAG,

问题 in my application one photo button is there. when I click on that button application open in camera mode and after capturing photo it will return on the layout and show that capture photo on this layout.But when the application is in camera mode and that time when I press return button then application stop working and it show : The application "AppName" (XXX) has stopped unexpectedly [Force Close] on the LogCat it show following error : java.lang.RuntimeException: Failure delivering result

问题 In my app I must take photo with custom activity. I implement all functionality and can save my photos, but in some devices they are too dark. I have this code, but it doesn't help me Parameters params = mCamera.getParameters(); if (params.getSupportedWhiteBalance().contains( Parameters.WHITE_BALANCE_AUTO)) { params.setWhiteBalance(Parameters.WHITE_BALANCE_AUTO); Log.d(TAG, "white balance auto"); } if (params.getSupportedFlashModes().contains( Parameters.FLASH_MODE_AUTO)) { params

问题 Below is my barcode scanner activity, everything works fine except for the setAutoFocusEnabled(true). It returns a message on runtime that says my device does not support auto focus although the Samsung Tab E T561 is an auto focus enabled device. import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.util.SparseArray; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.widget