应用程序将多个图像保存到图库中

Question

我想在我的应用程序中使用按钮以使用户能够点击并存储多张图片。
点击后，图片将被保存到手机图库内的文件夹中。

如何存储多个图像并在图库中指定路径？

Answer 1

你可以用下面的代码，如果你是从web的

class DownloadFile extends AsyncTask<String,Integer,Long> { 
ProgressDialog mProgressDialog = new ProgressDialog(MainActivity.this);// Change Mainactivity.this with your activity name. 
String strFolderName; 
@Override 
protected void onPreExecute() { 
    super.onPreExecute(); 
    mProgressDialog.setMessage("Downloading"); 
    mProgressDialog.setIndeterminate(false); 
    mProgressDialog.setMax(100); 
    mProgressDialog.setCancelable(true); 
    mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); 
    mProgressDialog.show(); 
} 
@Override 
protected Long doInBackground(String... aurl) { 
    int count; 
    try { 
     URL url = new URL((String) aurl[0]); 
     URLConnection conexion = url.openConnection(); 
     conexion.connect(); 
     String targetFileName="Name"+".rar";//Change name and subname 
     int lenghtOfFile = conexion.getContentLength(); 
     String PATH = Environment.getExternalStorageDirectory()+ "/"+downloadFolder+"/"; 
     File folder = new File(PATH); 
     if(!folder.exists()){ 
      folder.mkdir();//If there is no folder it will be created. 
     } 
     InputStream input = new BufferedInputStream(url.openStream()); 
     OutputStream output = new FileOutputStream(PATH+targetFileName); 
     byte data[] = new byte[1024]; 
     long total = 0; 
     while ((count = input.read(data)) != -1) { 
      total += count; 
        publishProgress ((int)(total*100/lenghtOfFile)); 
      output.write(data, 0, count); 
     } 
     output.flush(); 
     output.close(); 
     input.close(); 
    } catch (Exception e) {} 
    return null; 
} 
protected void onProgressUpdate(Integer... progress) { 
    mProgressDialog.setProgress(progress[0]); 
    if(mProgressDialog.getProgress()==mProgressDialog.getMax()){ 
     mProgressDialog.dismiss(); 
     Toast.makeText(fa, "File Downloaded", Toast.LENGTH_SHORT).show(); 
    } 
} 
protected void onPostExecute(String result) { 
} 

}

现在

在您的清单fecthing网址为图像添加以下permissions-

 <uses-permission android:name="android.permission.INTERNET"> </uses- permission> 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission> 
<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission> 

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