我想有一個簡單的應用程序,拍照,並在畫廊保存它,如下所示:http://developer.android.com/training/camera/photobasics.html拍攝並保存圖片Android攝像頭:圖片不保存我的設備上
我測試應用程序在我的設備上(2.1),我拍了照片,他們讓我點擊「確定」,但照片沒有保存在畫廊中,你知道爲什麼?以及我怎麼知道錯誤來自哪裏? (模擬器沒有任何「SD卡」,所以我不能真正調試該項目)。此外,這種技術與getContentResolver().openOutputStream(uri);
:http://developer.android.com/guide/topics/providers/content-providers.html#modifying之間的區別是什麼?
另外,我可以試試這個解決方案:Picture saving in emulator but not on device但我想知道爲什麼代碼不能在我的設備上工作..?
package pack.one;
import java.io.File;
import java.io.IOException;
import java.sql.Date;
import java.text.SimpleDateFormat;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
public class TestPictureActivity extends Activity {
private static final String JPEG_FILE_SUFFIX = ".jpg";
Intent takePictureIntent;
String mCurrentPhotoPath;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
dispatchTakePictureIntent(11);
}
private void dispatchTakePictureIntent(int actionCode) {
takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePictureIntent, actionCode);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data){
try {
handleSmallCameraPhoto(data);
} catch (IOException e) {
e.printStackTrace();
}
}
private void handleSmallCameraPhoto(Intent intent) throws IOException {
Bundle extras = intent.getExtras();
Bitmap mImageBitmap = (Bitmap) extras.get("data");
LayoutInflater inflater = LayoutInflater.from(this);
View view = inflater.inflate(R.layout.viewlayout, null);
ImageView mImageView = (ImageView) view.findViewById(R.id.V);
mImageView.setImageBitmap(mImageBitmap);
File f = createImageFile();
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));
galleryAddPic();
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date(0));
String imageFileName = timeStamp + "_";
File image = File.createTempFile(
imageFileName,
JPEG_FILE_SUFFIX,
null //default location for temporary files
);
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
private void galleryAddPic() {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
}
}
編輯:萬一有人要測試的應用程序,我只是說這兩條線在清單:
<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
編輯2:其實,我在「手機」的照片時,我將設備插入電腦,我可以看到一個新的圖片文件,名稱正確,但它是空的,所以我無法打開它。另外,我的畫廊中沒有任何內容。
謝謝
感謝比爾,我沒有把這一行,我重新安裝了這一行的應用程序,但畫面依然沒有在我的畫廊顯示.. – Paul 2012-01-02 09:25:02