实际开发下载文件之前需要先判断SD卡的剩余容量

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        File path = Environment.getExternalStorageDirectory();
        StatFs stat = new StatFs(path.getPath());
        long blockSize;
        long totalBlocks;
        long availableBlocks;

        //获取当前系统版本的等级
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2){
             blockSize = stat.getBlockSizeLong();
             totalBlocks = stat.getBlockCountLong();
             availableBlocks = stat.getAvailableBlocksLong();
        }
        else{
            blockSize = stat.getBlockSize();
            totalBlocks = stat.getBlockCount();
            availableBlocks = stat.getAvailableBlocks();
        }

        TextView tv = (TextView) findViewById(R.id.tv);
        tv.setText(formatSize(availableBlocks * blockSize));
    }

    private String formatSize(long size) {
        return Formatter.formatFileSize(this, size);
    }

    }

最后

以上就是年轻羊为你收集整理的获取SD卡的剩余容量实际开发下载文件之前需要先判断SD卡的剩余容量的全部内容，希望文章能够帮你解决获取SD卡的剩余容量实际开发下载文件之前需要先判断SD卡的剩余容量所遇到的程序开发问题。

如果觉得靠谱客网站的内容还不错，欢迎将靠谱客网站推荐给程序员好友。