Does anyone know a way to solve this problem? I use the camera for shooting. The following method generates a file in which the image will be saved. However, mkdirs() cannot create a directory on the device. What are my options in this situation?
private static File getOutputMediaFile() { File mediaStorageDir = new File( Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyCameraApp"); if (!mediaStorageDir.exists()) { if (!mediaStorageDir.mkdirs()) { Log.d("MyCameraApp", "failed to create directory"); return null; } } String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss") .format(new Date()); return new File(mediaStorageDir.getPath() + File.separator + "IMG_" + timeStamp + ".jpg"); }
error log:
04-20 09:56:07.370: D/MyCameraApp(809): failed to create directory 04-20 09:56:07.370: D/AndroidRuntime(809): Shutting down VM 04-20 09:56:07.370: W/dalvikvm(809): threadid=1: thread exiting with uncaught exception (group=0x40a13300) 04-20 09:56:07.441: E/AndroidRuntime(809): FATAL EXCEPTION: main 04-20 09:56:07.441: E/AndroidRuntime(809): java.lang.IllegalStateException: Could not execute method of the activity 04-20 09:56:07.441: E/AndroidRuntime(809): at android.view.View$1.onClick(View.java:3591) 04-20 09:56:07.441: E/AndroidRuntime(809): at android.view.View.performClick(View.java:4084) 04-20 09:56:07.441: E/AndroidRuntime(809): at android.view.View$PerformClick.run(View.java:16966) 04-20 09:56:07.441: E/AndroidRuntime(809): at android.os.Handler.handleCallback(Handler.java:615) 04-20 09:56:07.441: E/AndroidRuntime(809): at android.os.Handler.dispatchMessage(Handler.java:92) 04-20 09:56:07.441: E/AndroidRuntime(809): at android.os.Looper.loop(Looper.java:137) 04-20 09:56:07.441: E/AndroidRuntime(809): at android.app.ActivityThread.main(ActivityThread.java:4745) 04-20 09:56:07.441: E/AndroidRuntime(809): at java.lang.reflect.Method.invokeNative(Native Method) 04-20 09:56:07.441: E/AndroidRuntime(809): at java.lang.reflect.Method.invoke(Method.java:511) 04-20 09:56:07.441: E/AndroidRuntime(809): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 04-20 09:56:07.441: E/AndroidRuntime(809): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 04-20 09:56:07.441: E/AndroidRuntime(809): at dalvik.system.NativeStart.main(Native Method) 04-20 09:56:07.441: E/AndroidRuntime(809): Caused by: java.lang.reflect.InvocationTargetException 04-20 09:56:07.441: E/AndroidRuntime(809): at java.lang.reflect.Method.invokeNative(Native Method) 04-20 09:56:07.441: E/AndroidRuntime(809): at java.lang.reflect.Method.invoke(Method.java:511) 04-20 09:56:07.441: E/AndroidRuntime(809): at android.view.View$1.onClick(View.java:3586) 04-20 09:56:07.441: E/AndroidRuntime(809): ... 11 more 04-20 09:56:07.441: E/AndroidRuntime(809): Caused by: java.lang.NullPointerException: file 04-20 09:56:07.441: E/AndroidRuntime(809): at android.net.Uri.fromFile(Uri.java:441) 04-20 09:56:07.441: E/AndroidRuntime(809): at com.mycompany.myapp.utils.FileUtils.getOutputMediaFileUri(FileUtils.java:19) 04-20 09:56:07.441: E/AndroidRuntime(809): at com.mycompany.myapp.MyActivity.dispatchCameraIntent(MyActivity.java:56) 04-20 09:56:07.441: E/AndroidRuntime(809): ... 14 more 04-20 09:56:10.860: I/Process(809): Sending signal. PID: 809 SIG: 9
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