从复制图像入资产到SD卡上安装Android应用程序

问题描述：

我有一些照片应显示在应用程序中，问：如何我在资产文件夹中的code把影像复制到文件夹的用户安装应用程序的SC卡下在手机上

i have some images should be displayed in the Application, the Q. is how to copy the images i am putting in the assets folder in the code to a folder under the SC card of the user on install the application on the phone

答

这个尝试，

private void copyAssets() {
    AssetManager assetManager = getAssets();
    String[] files = null;
    try {
        files = assetManager.list("");
    } catch (IOException e) {
        Log.e("tag", e.getMessage());
    }
    for(String filename : files) {
        InputStream in = null;
        OutputStream out = null;
        try {
          in = assetManager.open(filename);
          out = new FileOutputStream("/sdcard/" + filename);
          copyFile(in, out);
          in.close();
          in = null;
          out.flush();
          out.close();
          out = null;
        } catch(Exception e) {
            Log.e("tag", e.getMessage());
        }       
    }
}
private void copyFile(InputStream in, OutputStream out) throws IOException {
    byte[] buffer = new byte[1024];
    int read;
    while((read = in.read(buffer)) != -1){
      out.write(buffer, 0, read);
    }
}

不要忘了在你的manifiest添加此权限

Don't forget to add this permission in your manifiest

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

从复制图像入资产到SD卡上安装Android应用程序

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