mediaplayer

onerror的return true和false，确实onerror是个很优待考究的地方，

另外要说的   

    /**

     * Sets the data source (file-path or http/rtsp URL) to use.

     *

     * @param path the path of the file, or the http/rtsp URL of the stream you want to play

     * @throws IllegalStateException if it is called in an invalid state

     */

public native void setDataSource(String path) throws IOException, IllegalArgumentException, IllegalStateException;

 

    /**

     * Sets the data source (FileDescriptor) to use. It is the caller's responsibility

     * to close the file descriptor. It is safe to do so as soon as this call returns.

     *

     * @param fd the FileDescriptor for the file you want to play

     * @throws IllegalStateException if it is called in an invalid state

     */

    public void setDataSource(FileDescriptor fd)

            throws IOException, IllegalArgumentException, IllegalStateException {

        // intentionally less than LONG_MAX

        setDataSource(fd, 0, 0x7ffffffffffffffL);

    }

 

从效果上来看如果把手机内存的通过流的方式设置datasource就会跑到onerror（4，-4）