android.webkit
Class FileLoader

java.lang.Object
  android.os.Handler
      android.webkit.StreamLoader
          android.webkit.FileLoader

 class FileLoader
extends StreamLoader

This class is a concrete implementation of StreamLoader that uses a file or asset as the source for the stream.

Field Summary

Fields inherited from class android.webkit.StreamLoader

mContentLength, mDataStream, mHandler, NO_STORE

Constructor Summary

FileLoader(String url, LoadListener loadListener, Context context, boolean asset)
Construct a FileLoader with the file URL specified as the content source.

Method Summary

protected void	buildHeaders(Headers headers) This method is called when the headers are about to be sent to the load framework.
static void	requestUrl(String url, LoadListener loadListener, Context context, boolean asset) Construct a FileLoader and instruct it to start loading.
protected boolean	setupStreamAndSendStatus() This method is called when the derived class should setup mDataStream, and call mHandler.status() to indicate that the load can occur.

Methods inherited from class android.webkit.StreamLoader

handleMessage, load

Methods inherited from class android.os.Handler

dispatchMessage, dump, getLooper, hasMessages, hasMessages, obtainMessage, obtainMessage, obtainMessage, obtainMessage, obtainMessage, post, postAtFrontOfQueue, postAtTime, postAtTime, postDelayed, removeCallbacks, removeCallbacks, removeCallbacksAndMessages, removeMessages, removeMessages, sendEmptyMessage, sendEmptyMessageAtTime, sendEmptyMessageDelayed, sendMessage, sendMessageAtFrontOfQueue, sendMessageAtTime, sendMessageDelayed, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

FileLoader

FileLoader(String url,
           LoadListener loadListener,
           Context context,
           boolean asset)

Construct a FileLoader with the file URL specified as the content source.

Parameters:

url - Full file url pointing to content to be loaded

loadListener - LoadListener to pass the content to

context - Context to use to access the asset.

asset - true if url points to an asset.

Method Detail

setupStreamAndSendStatus

protected boolean setupStreamAndSendStatus()

Description copied from class: StreamLoader

This method is called when the derived class should setup mDataStream, and call mHandler.status() to indicate that the load can occur. If it fails to setup, it should still call status() with the error code.

Specified by:

setupStreamAndSendStatus in class StreamLoader

Returns:

true if stream was successfully setup

buildHeaders

protected void buildHeaders(Headers headers)

Description copied from class: StreamLoader

This method is called when the headers are about to be sent to the load framework. The derived class has the opportunity to add addition headers.

Specified by:

buildHeaders in class StreamLoader

Parameters:

headers - Map of HTTP headers that will be sent to the loader.

requestUrl

public static void requestUrl(String url,
                              LoadListener loadListener,
                              Context context,
                              boolean asset)

Construct a FileLoader and instruct it to start loading.

Parameters:

url - Full file url pointing to content to be loaded

loadListener - LoadListener to pass the content to

context - Context to use to access the asset.

asset - true if url points to an asset.