Android从Camera中获取图片的两种方法
方法一：
此方法会由Camera直接产生照片回传给应用程序，但是返回的是压缩图片，显示不清晰
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try
{ Intent cameraIntent =
new Intent(MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(cameraIntent, CAMERA_WITH_DATA); }
catch (ActivityNotFoundException e) { e.printStackTrace(); } |
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Bundle bundle = data.getExtras();bmp_selectedPhoto = (Bitmap) bundle.get("data");if
(bmp_selectedPhoto != null) bmp_selectedPhoto.recycle();bmp_selectedPhoto = (Bitmap) data.getExtras().get("data");// int scale = ImageThumbnail.reckonThumbnail(bitMap.getWidth(),// bitMap.getHeight(), 500, 600);// bitMap = ImageThumbnail.PicZoom(bitMap,// (int) (bitMap.getWidth() / scale),// (int) (bitMap.getHeight() / scale));// bitMap = ThumbnailUtils.extractThumbnail(bitMap, 200, 200);if(bmp_selectedPhoto !=
null){ home_view.setBackground(new
BitmapDrawable(getResources(), bmp_selectedPhoto));} |
方法二：
此方法所拍即所得，但是会在Sd卡上产生临时文件
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Intent cameraIntent =
new Intent( android.provider.MediaStore.ACTION_IMAGE_CAPTURE); File appDir =
new File(Environment.getExternalStorageDirectory() +
"/KengDieA"); if
(!appDir.exists()) { appDir.mkdir(); } mUri = Uri.fromFile(new
File(Environment.getExternalStorageDirectory() +
"/KengDieA/",
"kengDiePic" + String.valueOf(System.currentTimeMillis()) +
".jpg")); cameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mUri); try
{ cameraIntent.putExtra("return-data",
true); startActivityForResult(cameraIntent, CAMERA_WITH_DATA); }
catch (Exception e) { e.printStackTrace(); } |
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ContentResolver cr =
this.getContentResolver(); try
{ if
(bmp_selectedPhoto != null)// 如果不释放的话，不断取图片，将会内存不够 bmp_selectedPhoto.recycle(); bmp_selectedPhoto = BitmapFactory.decodeStream(cr .openInputStream(mUri)); }
catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } home_view.setBackground(new
BitmapDrawable(getResources(), bmp_selectedPhoto)); |
