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POHow do I save image from Camera?
 

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  1. POHow do I save image from Camera?
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    <p>Here is my code:</p> <pre><code>package com.commonsware.android.skeleton; import android.app.Activity; import android.content.Context; import android.hardware.Camera; import android.hardware.Camera.*; import android.os.Bundle; import android.os.Environment; import android.util.Log; import android.view.Display; import android.view.Surface; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.Window; import android.view.WindowManager; import android.widget.FrameLayout; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.List; // ---------------------------------------------------------------------- public class SimpleBulbActivity extends Activity { private Preview mPreview; private static final String TAG = "CameraDemo"; FrameLayout preview; Camera mCamera; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Hide the window title. requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.main); } protected void onResume() { super.onResume(); //Setup the FrameLayout with the Camera Preview Screen mPreview = new Preview(this); preview = (FrameLayout)findViewById(R.id.preview); preview.addView(mPreview); } public void snap() { mCamera.takePicture(shutterCallback, rawCallback, jpegCallback); } ShutterCallback shutterCallback = new ShutterCallback() { public void onShutter() { Log.d(TAG, "onShutter'd"); } }; PictureCallback rawCallback = new PictureCallback() { public void onPictureTaken(byte[] _data, Camera _camera) { Log.d(TAG, "onPictureTaken - raw"); } }; PictureCallback jpegCallback = new PictureCallback() { public void onPictureTaken(byte[] data, Camera _camera) { FileOutputStream outStream = null; try { // write to local sandbox file system // outStream = // CameraDemo.this.openFileOutput(String.format("%d.jpg", // System.currentTimeMillis()), 0); // Or write to sdcard outStream = new FileOutputStream(String.format( "/sdcard/%d.jpg", System.currentTimeMillis())); outStream.write(data); outStream.close(); Log.d(TAG, "onPictureTaken - wrote bytes: " + data.length); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { } Log.d(TAG, "onPictureTaken - jpeg"); } }; // ---------------------------------------------------------------------- class Preview extends SurfaceView implements SurfaceHolder.Callback { SurfaceHolder mHolder; Preview(Context context) { super(context); // Install a SurfaceHolder.Callback so we get notified when the // underlying surface is created and destroyed. mHolder = getHolder(); mHolder.addCallback(this); mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } public void surfaceCreated(SurfaceHolder holder) { // The Surface has been created, acquire the camera and tell it where // to draw. mCamera = Camera.open(); try { mCamera.setPreviewDisplay(holder); mCamera.setPreviewCallback(new PreviewCallback() { public void onPreviewFrame(byte[] data, Camera arg1) { FileOutputStream outStream = null; try { outStream = new FileOutputStream(Environment.getExternalStorageDirectory().toString()); outStream.write(data); outStream.close(); Log.d(TAG, "onPreviewFrame - wrote bytes: " + data.length); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { } Preview.this.invalidate(); } }); } catch (IOException e) { mCamera.release(); mCamera = null; e.printStackTrace(); } } public void surfaceDestroyed(SurfaceHolder holder) { // Surface will be destroyed when we return, so stop the preview. // Because the CameraDevice object is not a shared resource, it's very // important to release it when the activity is paused. mCamera.stopPreview(); mCamera.release(); mCamera = null; } private Size getOptimalPreviewSize(List&lt;Size&gt; sizes, int w, int h) { final double ASPECT_TOLERANCE = 0.05; double targetRatio = (double) w / h; if (sizes == null) return null; Size optimalSize = null; double minDiff = Double.MAX_VALUE; int targetHeight = h; // Try to find an size match aspect ratio and size for (Size size : sizes) { double ratio = (double) size.width / size.height; if (Math.abs(ratio - targetRatio) &gt; ASPECT_TOLERANCE) continue; if (Math.abs(size.height - targetHeight) &lt; minDiff) { optimalSize = size; minDiff = Math.abs(size.height - targetHeight); } } // Cannot find the one match the aspect ratio, ignore the requirement if (optimalSize == null) { minDiff = Double.MAX_VALUE; for (Size size : sizes) { if (Math.abs(size.height - targetHeight) &lt; minDiff) { optimalSize = size; minDiff = Math.abs(size.height - targetHeight); } } } return optimalSize; } public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { // Now that the size is known, set up the camera parameters and begin // the preview. Camera.Parameters parameters = mCamera.getParameters(); List&lt;Size&gt; sizes = parameters.getSupportedPreviewSizes(); Size optimalSize = getOptimalPreviewSize(sizes, w, h); Display display = ((WindowManager)getSystemService(WINDOW_SERVICE)).getDefaultDisplay(); if(display.getRotation() == Surface.ROTATION_0) { parameters.setPreviewSize(optimalSize.height, optimalSize.width); mCamera.setDisplayOrientation(90); } if(display.getRotation() == Surface.ROTATION_90) { parameters.setPreviewSize(optimalSize.width, optimalSize.height); } if(display.getRotation() == Surface.ROTATION_180) { parameters.setPreviewSize(optimalSize.width, optimalSize.height); } if(display.getRotation() == Surface.ROTATION_270) { parameters.setPreviewSize(optimalSize.width, optimalSize.height); mCamera.setDisplayOrientation(0); } mCamera.setParameters(parameters); mCamera.startPreview(); } } } </code></pre> <p>Okay I have modified my code a bit.</p> <p>I have this in my main layout:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/layout"&gt; &lt;TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Camera Demo" android:textSize="24sp" /&gt; &lt;FrameLayout android:layout_weight="1" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;FrameLayout android:id="@+id/preview" android:layout_weight="1" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;/FrameLayout&gt; &lt;ImageView android:src="@drawable/litbulb" android:layout_width="match_parent" android:layout_height="112dip" /&gt; &lt;/FrameLayout&gt; &lt;Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/buttonClick" android:text="Snap!" android:layout_gravity="center"&gt;&lt;/Button&gt; &lt;/LinearLayout&gt; </code></pre> <p>When I click the "Snap!" or <code>buttonClick</code> button, it's supposed to capture and save the image, but it's not. Can anyone help me modify this code so it does?</p> <p>Also, it crashes every time I leave the app. Here is the relevant logcat data:</p> <pre><code>12-21 13:30:47.820: ERROR/AndroidRuntime(3906): FATAL EXCEPTION: main 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): java.lang.RuntimeException: Method called after release() 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at android.hardware.Camera.setHasPreviewCallback(Native Method) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at android.hardware.Camera.access$600(Camera.java:114) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at android.hardware.Camera$EventHandler.handleMessage(Camera.java:519) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at android.os.Handler.dispatchMessage(Handler.java:99) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at android.os.Looper.loop(Looper.java:123) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at android.app.ActivityThread.main(ActivityThread.java:4627) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at java.lang.reflect.Method.invokeNative(Native Method) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at java.lang.reflect.Method.invoke(Method.java:521) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 12-21 13:30:47.820: ERROR/AndroidRuntime(3906): at dalvik.system.NativeStart.main(Native Method) </code></pre>
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    1. COyou can try this http://stackoverflow.com/questions/649057/how-do-i-save-data-from-camera-to-disk-using-mediastore-on-android
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      1. POHow do I save image from Camera?
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