Android保存Bitmap到本地

青旅半醒 2022-07-14 05:46 454阅读 0赞

private int i;
    
        public void saveMyBitmap(Bitmap mBitmap) {
    
            File dir = new File("/sdcard/Note/");
            if (!dir.exists())
                dir.mkdirs();
            File f = new File("/sdcard/Note/" + i++ + ".jpg");
            FileOutputStream fOut = null;
            try {
                fOut = new FileOutputStream(f);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
                Log.e("FFF", e.getMessage());
            }
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
            try {
                fOut.flush();
            } catch (IOException e) {
                e.printStackTrace();
                Log.e("FFF", e.getMessage());
            }
            try {
                fOut.close();
            } catch (IOException e) {
                e.printStackTrace();
                Log.e("FFF", e.getMessage());
            }
        }
    
    /** * @param bitmap 需要保存的图片对象 * @param picPath 需要保存的本地路径，建议设置为公用常量 */
        private void saveBitmap(Bitmap bitmap, String picPath) {
            FileOutputStream fos = null;
            try {
                fos = new FileOutputStream(new File(picPath));
                bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
                fos.flush();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                if (null != fos) {
                    try {
                        fos.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
    
        }
    
        /** * @param imageView 需要设置图片的控件 * @param picPath 需要读取图片的本地路径 * @return */
        private void readBitmap(ImageView imageView, String picPath) {
            FileInputStream fis = null;
            try {
                fis = new FileInputStream(new File(picPath));
                Bitmap bitmap = BitmapFactory.decodeStream(fis);
                imageView.setImageBitmap(bitmap);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } finally {
                if (null != fis) {
                    try {
                        fis.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
        <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />