android 存储图片到data目录和读取data目录下的图片

Posted 2020-08-23 小小鸟儿！

public void storePic(String tabid, String key, Bitmap bitmap) {
    LogUtils.LOGD(TAG, "storePic begin tabid = " + tabid + "key = " + key);
    FileOutputStream fos = null;
    try {
        fos = getActivity().openFileOutput(tabid + "_" + key, Context.MODE_PRIVATE);
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
    } catch (FileNotFoundException e) {
        LogUtils.LOGE(TAG, "storePic FileNotFoundException e = " +e);
    } finally {
        if(fos != null) {
            try {
                fos.flush();
                fos.close();
            } catch (IOException e) {
                LogUtils.LOGE(TAG, "storePic IOException e = " +e);
            }
        }
    }
}

public Bitmap getStorePic(String tabid, String key) {
    LogUtils.LOGD(TAG, "getStorePic begin tabid = " + tabid + "key = " + key);
    FileInputStream fin = null;
    Bitmap bitmap = null;
    try {
        fin = getActivity().openFileInput(tabid + "_" + key);
        bitmap = BitmapFactory.decodeStream(fin);
    } catch (FileNotFoundException e) {
        LogUtils.LOGE(TAG, "getStorePic FileNotFoundException e = " + e);
    }
    return bitmap;
}

总而流程：

存储图片代码：
[java] view plain copy
String str1 = "icon.png";  
  
FileOutputStream localFileOutputStream1 = openFileOutput(str1, 0);  
  
Bitmap.CompressFormat localCompressFormat = Bitmap.CompressFormat.PNG;  
  
bitmap.compress(localCompressFormat, 100, localFileOutputStream1);  
  
localFileOutputStream1.close();  

读取图片代码：
[java] view plain copy
String localIconNormal = "icon.png";  
  
FileInputStream localStream = openFileInput(localIconNormal);  
  
Bitmap bitmap = BitmapFactory.decodeStream(localStream));