Дисплейная камера с AndAR Artoolkit и поверхностным видом

Question

С помощью следующего кода я могу отобразить камеру с помощью метода startpreview, но я не могу использовать предварительный просмотр библиотеки andAR (https://code.google.com/p/andar/), что делает черный экран. Я не "т понять, если это происходит потому, что он перегружен или нет.

package edu.dhbw.andar.sample; 

import java.io.IOException; 
import java.util.List; 

import android.content.Intent; 
import android.hardware.Camera; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.SurfaceHolder; 
import android.view.SurfaceView; 
import android.view.WindowManager; 
import edu.dhbw.andar.ARToolkit; 
import edu.dhbw.andar.AndARActivity; 
import edu.dhbw.andar.exceptions.AndARException; 

/** 
* Example of an application that makes use of the AndAR toolkit. 
* 
* @author Tobi 
* 
*/ 
public class CustomActivity extends AndARActivity implements SurfaceHolder.Callback { 

CustomObject someObject; 
ARToolkit artoolkit; 
SurfaceView surfaceView; 
SurfaceHolder surfaceHolder; 
Camera camera; 

@Override 
public void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
      WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     CustomRenderer renderer = new CustomRenderer();// optional, may be set 
                             // to null 
     super.setNonARRenderer(renderer);// or might be omited 
     try { 
       // register a object for each marker type 
       artoolkit = super.getArtoolkit(); 
       someObject = new CustomObject("test", "patt.hiro", 80.0, 
           new double[] { 0, 0 }); 
       artoolkit.registerARObject(someObject); 
       someObject = new CustomObject("test", "android.patt", 80.0, 
           new double[] { 0, 0 }); 
       artoolkit.registerARObject(someObject); 
       someObject = new CustomObject("test", "barcode.patt", 80.0, 
           new double[] { 0, 0 }); 
       artoolkit.registerARObject(someObject); 
     } catch (AndARException ex) { 
       // handle the exception, that means: show the user what happened 
       System.out.println(""); 
     } 
     surfaceView = (SurfaceView) findViewById(R.id.surfaceView); 
     surfaceHolder = surfaceView.getHolder(); 
     surfaceHolder.addCallback(this); 
     surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
} 

@Override 
public void surfaceChanged(SurfaceHolder holder, int format, int width, 
       int height) { 
     // TODO Auto-generated method stub 
     startCamera(holder, width, height); 

} 

@Override 
public SurfaceView getSurfaceView() { 
     // TODO Auto-generated method stub 
     return super.getSurfaceView(); 
} 

@Override 
public void startPreview() { 
     // TODO Auto-generated method stub 
     super.startPreview(); 
} 

@Override 
public void surfaceDestroyed(SurfaceHolder holder) { 
     // TODO Auto-generated method stub 
     super.surfaceDestroyed(holder); 
} 

@Override 
public void surfaceCreated(SurfaceHolder holder) { 
     // TODO Auto-generated method stub 
     camera = Camera.open(); 
try { 
    camera.setPreviewDisplay(holder); 
} catch (IOException e) { 
} 
} 

/** 
* Inform the user about exceptions that occurred in background threads. 
* This exception is rather severe and can not be recovered from. TODO 
* Inform the user and shut down the application. 
*/ 
@Override 
public void uncaughtException(Thread thread, Throwable ex) { 
     Log.e("AndAR EXCEPTION", ex.getMessage()); 
     finish(); 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     // getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 
     switch (id) { 
     // case R.id.settings: 
     // break; 
     default: 
       break; 
     } 
     return super.onOptionsItemSelected(item); 
} 

private void startCamera(SurfaceHolder sh, int width, int height) { 
     Camera.Parameters parameters = camera.getParameters(); 
      List<Camera.Size> sizes = parameters.getSupportedPreviewSizes(); 
      Camera.Size cs = sizes.get(0); 
      parameters.setPreviewSize(cs.width, cs.height); 
      camera.setParameters(parameters); 

    try { 
     camera.setPreviewDisplay(sh); 
    } catch (Exception e) { 
    } 

    camera.startPreview(); 
} 

private void stopCamera() { 
     //camera.removeCallback(this); 

     camera.stopPreview(); 
    camera.release(); 
} 

} 

Answer 1

Он работал на моем компьютере и телефоне. Я думаю, что проблема разрешения. Вы должны добавить в свой файл манифеста разрешения, необходимые ANDAR .

<uses-permission android:name="android.permission.CAMERA"/> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 
<uses-feature android:name="android.hardware.camera" /> 
<uses-feature android:name="android.hardware.camera.autofocus" />