I am trying to save the image file into my application's internal storage.
To do this, I wrote the following method which takes the id and bitmap and creates the file of an image, where directory is the class static field of type File.
// Returns thumbnail
private static Bitmap saveBitmapWithThumbnail(long id, Bitmap bitmap) {
Bitmap thumbnail;
if(directory == null) {
ContextWrapper cw = new ContextWrapper(Engine.getContext());
directory = cw.getDir(DIRECTORY_NAME, Context.MODE_PRIVATE);
if(!directory.exists()) directory.mkdir();
}
saveBitmap(getImageFileName(id), bitmap);
saveBitmap(getThumbnailFileName(id), thumbnail=makeThumbnail(bitmap));
return thumbnail;
}
What this method does is to get an id and bitmap and save it's original file and created thumbnail into the internal storage.
The names are generated as [id+".png"] for the original file and [id+"_tn.png"] for the thumbnail file.
saveBitmap() mehtod is the one which is writing the bitmap to the internal storage.
private static void saveBitmap(String fileName, Bitmap bitmap) {
File imageFile = new File(directory, fileName);
FileOutputStream fos = null;
try {
fos = new FileOutputStream(imageFile);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.close();
} catch(Exception e) {}
}
It takes the file name (11.png, 11_tn.png, ...) and the bitmap (whether it's original or thumbnail) and makes a file and compress into it's outputstream.
The weird thing is that when I run my application for the first time saving the images, it works great.
It can read and write the images that are stored int the internal storage.
However, after I close my application and run it again, it throws FileNotFoundException with following logs.
W/System.err: java.io.FileNotFoundException: /1.png: open failed: ENOENT (No such file or directory)
W/System.err: at libcore.io.IoBridge.open(IoBridge.java:458)
W/System.err: at java.io.FileInputStream.<init>(FileInputStream.java:78)
W/System.err: at com.google.dotplace.dotplace.data.Image.parseCursor(Image.java:118)
W/System.err: at com.google.dotplace.dotplace.data.Image.checkDebug(Image.java:74)
W/System.err: at com.google.dotplace.dotplace.LoadActivity.debugDatabase(LoadActivity.java:77)
W/System.err: at com.google.dotplace.dotplace.LoadActivity.onCreate(LoadActivity.java:25)
W/System.err: at android.app.Activity.performCreate(Activity.java:5275)
W/System.err: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
W/System.err: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2167)
W/System.err: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2253)
W/System.err: at android.app.ActivityThread.access$800(ActivityThread.java:142)
W/System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1203)
W/System.err: at android.os.Handler.dispatchMessage(Handler.java:102)
W/System.err: at android.os.Looper.loop(Looper.java:136)
W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5120)
W/System.err: at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err: at java.lang.reflect.Method.invoke(Method.java:515)
W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:608)
W/System.err: at dalvik.system.NativeStart.main(Native Method)
W/System.err: Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)
W/System.err: at libcore.io.Posix.open(Native Method)
W/System.err: at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
W/System.err: at libcore.io.IoBridge.open(IoBridge.java:442)
W/System.err: ... 19 more
Only conclusion I can make is that internal storage changes or it's files are delete after my application is closed, but I don't know why.
What I am guessing now is that I have problem with my testing.
I'm testing this as follows.
Compile and run the project with file insertions and check.
Compile and run the project without file insertions and check if 1's data is remaining.
I am doing this because I did't make any ui of writing or reading files in my app.
My only guess is when I compile the project again, it somehow changes something unique in the context of my application which leads to changed internal storage which I think it's quite nonsense.
Where am I wrong??
