Android從Camera中擷取圖片的兩種方法

方法一：

此方法會由Camera直接產生照片回傳給應用程式，但是返回的是壓縮圖片，顯示不清晰

try { Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(cameraIntent, CAMERA_WITH_DATA); } catch (ActivityNotFoundException e) { e.printStackTrace(); }

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，但是會在Sd卡上產生臨時檔案

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();}

ContentResolver cr = this.getContentResolver();try {if (bmp_selectedPhoto != null)// 如果不釋放的話，不斷取圖片，將會記憶體不夠bmp_selectedPhoto.recycle();bmp_selectedPhoto = BitmapFactory.decodeStream(cr.openInputStream(mUri));} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}home_view.setBackground(new BitmapDrawable(getResources(),bmp_selectedPhoto));