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POAndroid Front Camera
 

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    <p>i'm trying to use front camera using this tutorial</p> <p><a href="http://www.vogella.com/articles/AndroidCamera/article.html" rel="nofollow">http://www.vogella.com/articles/AndroidCamera/article.html</a></p> <p>but got a problem that is making me mad.</p> <p>1st of all, if use the code provided by example, at onClick(View view) the camera is null. is this a mine problem? however, i solved that implementing camera.open() directly in my onClick method.</p> <pre><code> public void takePhoto(View view) { if (!getPackageManager() .hasSystemFeature(PackageManager.FEATURE_CAMERA)) { Toast.makeText(this, "No camera on this device", Toast.LENGTH_LONG).show(); } else { cameraId = findFrontFacingCamera(); if (cameraId &lt; 0) { Toast.makeText(this, "No front facing camera found.", Toast.LENGTH_LONG).show(); } else { camera = Camera.open(cameraId); } } try{ PhotoHandler photoHandler = new PhotoHandler(getApplicationContext()); camera.takePicture(null, null,photoHandler); }catch(Exception c){ Log.e("error", c.toString(),c.getCause()); } } </code></pre> <p>i added</p> <pre><code>try{ PhotoHandler photoHandler = new PhotoHandler(getApplicationContext()); camera.takePicture(null, null,photoHandler); }catch(Exception c){ Log.e("error", c.toString(),c.getCause()); } </code></pre> <p>to see what's the problem and logcat tells me </p> <pre><code>05-16 17:19:00.456: E/AndroidRuntime(12638): FATAL EXCEPTION: main 05-16 17:19:00.456: E/AndroidRuntime(12638): java.lang.IllegalStateException: Could not execute method of the activity 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.view.View$1.onClick(View.java:3599) 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.view.View.performClick(View.java:4204) 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.view.View$PerformClick.run(View.java:17354) 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.os.Handler.handleCallback(Handler.java:725) 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.os.Handler.dispatchMessage(Handler.java:92) 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.os.Looper.loop(Looper.java:137) 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.app.ActivityThread.main(ActivityThread.java:5231) 05-16 17:19:00.456: E/AndroidRuntime(12638): at java.lang.reflect.Method.invokeNative(Native Method) 05-16 17:19:00.456: E/AndroidRuntime(12638): at java.lang.reflect.Method.invoke(Method.java:511) 05-16 17:19:00.456: E/AndroidRuntime(12638): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794) 05-16 17:19:00.456: E/AndroidRuntime(12638): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:561) 05-16 17:19:00.456: E/AndroidRuntime(12638): at dalvik.system.NativeStart.main(Native Method) 05-16 17:19:00.456: E/AndroidRuntime(12638): Caused by: java.lang.reflect.InvocationTargetException 05-16 17:19:00.456: E/AndroidRuntime(12638): at java.lang.reflect.Method.invokeNative(Native Method) 05-16 17:19:00.456: E/AndroidRuntime(12638): at java.lang.reflect.Method.invoke(Method.java:511) 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.view.View$1.onClick(View.java:3594) 05-16 17:19:00.456: E/AndroidRuntime(12638): ... 11 more 05-16 17:19:00.456: E/AndroidRuntime(12638): Caused by: java.lang.RuntimeException: **Fail to connect to camera service** 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.hardware.Camera.native_setup(Native Method) 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.hardware.Camera.&lt;init&gt;(Camera.java:340) 05-16 17:19:00.456: E/AndroidRuntime(12638): at android.hardware.Camera.open(Camera.java:302) 05-16 17:19:00.456: E/AndroidRuntime(12638): at com.example.cameratest.MainActivity.takePhoto(MainActivity.java:34) 05-16 17:19:00.456: E/AndroidRuntime(12638): ... 14 more </code></pre> <p>my AndroidManifest.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.cameratest" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-permission android:name="android.permission.CAMERA" /&gt; &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/&gt; &lt;uses-feature android:name="android.hardware.camera" /&gt; &lt;uses-feature android:name="android.hardware.camera.front" /&gt; &lt;uses-sdk android:minSdkVersion="9" android:targetSdkVersion="17" /&gt; &lt;application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" &gt; &lt;activity android:name="com.example.cameratest.MainActivity" android:label="@string/app_name" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre>
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    1. COIt appears that your camera.open() call is failing: '05-16 17:19:00.456: E/AndroidRuntime(12638): Caused by: java.lang.RuntimeException: **Fail to connect to camera service**' Could be that it wasn't closed correctly or is in use by another app. You should surround the camera.open() call with a try/catch block and handle it.
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    2. COBah my app simply do this.. So who can open camera before i do this app.. Bah! However i debugged all the code and when I call .open(id) i correctly get an instance of camera... The problem is right in the .takepicture(). I got no exception before that line
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