拍摄并保存图片安卓摄像头:图片未保存在我的设备上

时间:2012-01-02 05:28:29

标签: android android-camera save

我想要一个简单的应用程序拍摄照片并将其保存在图库中,如下所示:http://developer.android.com/training/camera/photobasics.html

我在我的设备上测试了应用程序(2.1),我拍了照片,他们让我点击“确定”,但图片没有保存在图库中,你知道为什么吗?以及如何知道错误的来源? (模拟器没有任何“SD卡”,所以我无法真正调试项目)。此外,此技术与getContentResolver().openOutputStream(uri); 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); } } 之间的区别是什么?

此外,我可以尝试这个解决方案:http://developer.android.com/guide/topics/providers/content-providers.html#modifying但我想知道为什么代码在我的设备上不起作用..?

<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

编辑:如果有人想测试应用程序,我只是在清单中添加了这两行:

{{1}}

编辑2:我实际上有“手机”中的图片,当我将设备插入我的电脑时,我可以看到一个新的图片文件,名称正确,但它是空的,所以我无法打开它。另外,我的画廊中没有任何内容。

由于

2 个答案:

答案 0 :(得分:1)

尝试添加此内容:

<uses-permission android:name="android.permission.CAMERA" />

答案 1 :(得分:0)

你的AndroidManafest.xml文件中有这一行吗?

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />