将图片保存到系统相册的两种方法

来源：互联网发布：淘宝 cpu 主板编辑：程序博客网时间：2024/04/30 01:22

第一种：采用系统的api直接使用：

ContentResolver cr = getContentResolver();String url = MediaStore.Images.Media.insertImage(cr, bmp,String.valueOf(System.currentTimeMillis()), "");

但是，这种方式必须得刷新图库：

sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"+ Environment.getExternalStorageDirectory())));

尽管如此，这种方法还是只能适合安卓4.4以下的手机，若是4.4以上的手机就会报错，因此建议采用第二种方式来写；

第二种：直接采用文件流进行保存到相册

File tempFile = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).getPath() + "/" + String.valueOf(System.currentTimeMillis()) + ".png");if(tempFile.exists()){tempFile.delete();}try {tempFile.createNewFile();} catch (IOException e) {e.printStackTrace();}FileOutputStream fOut = null;try {fOut = new FileOutputStream(tempFile);} catch (FileNotFoundException e) {e.printStackTrace();}bmp.compress(Bitmap.CompressFormat.PNG, 100, fOut);try {fOut.flush();fOut.close();} catch (IOException e) {// TODO: handle exceptione.printStackTrace();}

最后把整个方法贴出来：

/** * 將ImageView中的圖片保存到系统相册 */private void SaveImageToSysAlbum() {if (FileUtil.isSdCardExist()) {BitmapDrawable bmpDrawable = (BitmapDrawable)mFullImageView.getDrawable();Bitmap bmp = bmpDrawable.getBitmap();if (bmp != null) {try {/*ContentResolver cr = getContentResolver();String url = MediaStore.Images.Media.insertImage(cr, bmp,String.valueOf(System.currentTimeMillis()), "");*/File tempFile = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).getPath() + "/" + String.valueOf(System.currentTimeMillis()) + ".png");if(tempFile.exists()){tempFile.delete();}try {tempFile.createNewFile();} catch (IOException e) {e.printStackTrace();}FileOutputStream fOut = null;try {fOut = new FileOutputStream(tempFile);} catch (FileNotFoundException e) {e.printStackTrace();}bmp.compress(Bitmap.CompressFormat.PNG, 100, fOut);try {fOut.flush();fOut.close();} catch (IOException e) {// TODO: handle exceptione.printStackTrace();}Toast.makeText(this, getString(R.string.save_succ), Toast.LENGTH_SHORT).show();} catch (Exception e) {e.printStackTrace();}}else {Toast.makeText(this, getString(R.string.no_iamge_save_fail), Toast.LENGTH_SHORT).show();}}else {Toast.makeText(this, getString(R.string.no_sdcard_save_fail), Toast.LENGTH_SHORT).show();}String release = android.os.Build.VERSION.RELEASE;String tempID = release.substring(0, 3);if(Double.parseDouble(tempID) >= 4.4){//安卓4.4以上版本的时候使用这个，以下的使用else语句里面的MediaScannerConnection.scanFile(this,new String[]{Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).getPath() + "/" }, null,null);}else {sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"+ Environment.getExternalStorageDirectory())));MediaScannerConnection.scanFile(this,new String[]{Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).getPath() + "/" }, null,null); }}

0 0