如何在Android中向文件中写入零字节？

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

public class MainActivity extends AppCompatActivity {

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

        // 获取文件路径
        File file = new File(getFilesDir(), "example.txt");

        try {
            // 创建文件输出流对象
            FileOutputStream outputStream = new FileOutputStream(file);

            // 写入零字节
            outputStream.write(0);

            // 关闭文件输出流
            outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}