Android 相机拍照 FileNotFoundException

Android camera photo take FileNotFoundException

ORIGINAL ：在我的应用程序中，我从代码中调用本机相机，我打算从相机拍摄照片并获取其文件路径也在图像视图中显示它。

下面的代码是从 AlertDialog.Builder

调用的

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//run camera
builder.setNegativeButton("Resim Cek", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
//native camera
// here,counter will be incremented each time,and the picture taken by camera will be stored as 1.jpg,2.jpg and likewise.
count++;
String file = dir+count+".jpg";
File newfile = new File(file);
try {
newfile.createNewFile();
} catch (IOException e) {}

Uri outputFileUri = Uri.fromFile(newfile);

Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);

startActivityForResult(cameraIntent, TAKE_PHOTO_CODE);
dialog.dismiss();

}
});

在 onActivityResult

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if (requestCode == TAKE_PHOTO_CODE && resultCode == RESULT_OK) {
Log.d("CameraDemo","Pic saved");
final File file = getTempFile(this);
try
{
Media.getBitmap(getContentResolver(), Uri.fromFile(file) );
String image_string = Uri.fromFile(file).toString();
Bitmap bm = Bitmap.createScaledBitmap(
BitmapFactory.decodeFile(image_string),
getResources().getDisplayMetrics().widthPixels,
getResources().getDisplayMetrics().heightPixels,
true);
bmpPhoto = bm;
bmpPhotoPath =image_string;
imageView.setImageBitmap(bmpPhoto);
removePhoto.setVisibility(View.VISIBLE);
}
catch (FileNotFoundException e)
{
Toast.makeText(getApplicationContext(),"file not found exception", Toast.LENGTH_SHORT).show();
}
catch (IOException e)
{
Toast.makeText(getApplicationContext(),"ioexception", Toast.LENGTH_SHORT).show();
}
}

它总是出现 FileNotFoundException，我该如何解决这个问题？

因为我使用的是 try catch ，所以它不会给出太多日志

1	05-26 10:04:12.620: D/CameraDemo(3794): Pic saved

改变onActivityResult后

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if (requestCode == TAKE_PHOTO_CODE && resultCode == RESULT_OK) {
Log.d("CameraDemo","Pic saved");
//final File file = getTempFile(this);
File outputDir = ContactFormActivity.this.getCacheDir(); // context being the Activity pointer
File file = null;
try {
file = File.createTempFile("prefix","extension", outputDir);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try
{
Media.getBitmap(getContentResolver(), Uri.fromFile(file) );
String image_string = Uri.fromFile(file).toString();
Bitmap bm = Bitmap.createScaledBitmap(
BitmapFactory.decodeFile(image_string),
getResources().getDisplayMetrics().widthPixels,
getResources().getDisplayMetrics().heightPixels,
true);
bmpPhoto = bm;
bmpPhotoPath =image_string;
imageView.setImageBitmap(bmpPhoto);
removePhoto.setVisibility(View.VISIBLE);
}
catch (FileNotFoundException e)
{
Toast.makeText(getApplicationContext(),"file not found exception", Toast.LENGTH_SHORT).show();
}
catch (IOException e)
{
Toast.makeText(getApplicationContext(),"ioexception", Toast.LENGTH_SHORT).show();
}
}

我的日志在这里

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05-26 10:29:59.170: D/CameraDemo(6559): Pic saved
05-26 10:29:59.190: D/skia(6559): --- SkImageDecoder::Factory returned null
05-26 10:29:59.190: I/System.out(6559): Not a DRM File, opening notmally
05-26 10:29:59.190: D/AndroidRuntime(6559): Shutting down VM
05-26 10:29:59.190: W/dalvikvm(6559): threadid=1: thread exiting with uncaught exception (group=0x40c551f8)
05-26 10:29:59.230: E/AndroidRuntime(6559): FATAL EXCEPTION: main
05-26 10:29:59.230: E/AndroidRuntime(6559): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=0, result=-1, data=null} to activity {com.company.project/com.company.project.ContactFormActivity}: java.lang.NullPointerException
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.app.ActivityThread.deliverResults(ActivityThread.java:2992)
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3035)
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.app.ActivityThread.access$1100(ActivityThread.java:127)
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1189)
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.os.Handler.dispatchMessage(Handler.java:99)
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.os.Looper.loop(Looper.java:137)
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.app.ActivityThread.main(ActivityThread.java:4507)
05-26 10:29:59.230: E/AndroidRuntime(6559): at java.lang.reflect.Method.invokeNative(Native Method)
05-26 10:29:59.230: E/AndroidRuntime(6559): at java.lang.reflect.Method.invoke(Method.java:511)
05-26 10:29:59.230: E/AndroidRuntime(6559): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:978)
05-26 10:29:59.230: E/AndroidRuntime(6559): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745)
05-26 10:29:59.230: E/AndroidRuntime(6559): at dalvik.system.NativeStart.main(Native Method)
05-26 10:29:59.230: E/AndroidRuntime(6559): Caused by: java.lang.NullPointerException
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:432)
05-26 10:29:59.230: E/AndroidRuntime(6559): at com.company.project.ContactFormActivity.onActivityResult(ContactFormActivity.java:419)
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.app.Activity.dispatchActivityResult(Activity.java:4653)
05-26 10:29:59.230: E/AndroidRuntime(6559): at android.app.ActivityThread.deliverResults(ActivityThread.java:2988)
05-26 10:29:59.230: E/AndroidRuntime(6559): ... 11 more