我正在創建一個簡單的應用程序來拍照。這是我的代碼BitmapFactory:無法解碼流:java.io.FileNotFoundException即使當文件實際上存在
Button b1;
ImageView iv;
String TAG = "MAIN ACTIVITY";
File photo;
private Uri mImageUri;
private File createTemporaryFile(String part, String ext) throws Exception {
File externalStorageDirectory = Environment.getExternalStorageDirectory();
File tempDir = new File(externalStorageDirectory + "/cameratest/");
if (!tempDir.exists()) {
tempDir.mkdir();
}
return File.createTempFile(part, ext, tempDir);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1 = (Button) findViewById(R.id.button);
iv = (ImageView) findViewById(R.id.imageView);
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
try {
// place where to store camera taken picture
photo = createTemporaryFile("picture", ".jpg");
photo.delete();
} catch (Exception e) {
Log.v(TAG, "Can't create file to take picture!");
Toast.makeText(getApplicationContext(), "Please check SD card! Image shot is impossible!",
Toast.LENGTH_SHORT).show();
}
mImageUri = Uri.fromFile(photo);
intent.putExtra(MediaStore.EXTRA_OUTPUT, mImageUri);
startActivityForResult(intent, 0);
}
});
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 0 && resultCode == RESULT_OK) {
Log.d(TAG, mImageUri.toString());
Bitmap bitmap = BitmapFactory.decodeFile(mImageUri.toString());
iv.setImageBitmap(bitmap);
}
}
,你可以看到我在年底的logcat的加入eLog.d(TAG, mImageUri.toString());
(還有FileNotFoundException
)我看到這豬病:
03-27 00:43:30.498 30526-30526/myapplication.example.falcoleo.cameratest1 D/MAIN ACTIVITY: file:///storage/emulated/0/cameratest/picture459838058.jpg
03-27 00:43:30.499 30526-30526/myapplication.example.falcoleo.cameratest1 E/BitmapFactory: Unable to decode stream: java.io.FileNotFoundException: file:/storage/emulated/0/cameratest/picture459838058.jpg: open failed: ENOENT (No such file or directory)
想,如果這個目錄存在? spo alert警報,it does。它不像是在BitmapFactory.decodeFile
之後創建的圖像。我真的不明白我做錯了什麼。一切工作正常,除非它實際上必須顯示照片,那麼它只是不顯示它。只是空白。就像WTF m8一樣,我只是想做我的工作,不需要發瘋,你知道的。
你確定你有權限在外部存儲器中讀/寫嗎? – F43nd1r
我有權限 – Leo300