textviewermidlet.java

textviewer 一个手机上的文本浏览器实现

package textViewer;


import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import java.io.InputStream;
// import java.io.DataInputStream;
import java.io.InputStreamReader;
import java.lang.*;
import java.util.Vector;
import midletLib.*;



public class textViewerMIDlet extends MIDlet implements ResourceIncrementLoadedListener {

    // startApp and destroyApp can throw a MIDletStateChangeException if they want

    private Display display;
    private TextViewerForm textViewerForm;
    private String text;

    private StringLoadThread stringLoadThread;

    public textViewerMIDlet() {
	// should anything go here????
	textViewerForm = new TextViewerForm("Text Viewer", "hello katherine", this);
	stringLoadThread = new StringLoadThread(getClass().getResourceAsStream("text.1.txt"), this, null, this, 15, textViewerForm.getTextChunkLength());
	//TODO: constant
		stringLoadThread.start();
	//	stringLoadThread.run();
    }


    protected void startApp() 
    {

	//	textViewerForm.setText(text);
	//	textViewerForm = new TextViewerForm("Text Viewer", "text test");
	display = Display.getDisplay(this);

	display.setCurrent(textViewerForm);

    }


    protected void pauseApp(  ) 
    {
    }


    protected void destroyApp( boolean unconditional )
    {
    }

    public void resourceLoaded(Object rsrcID, Object rsrc)
    {
	// there is only one thing we could be waiting for...
	textStringLoaded((String)rsrc);
    }

    public void moreOfResourceLoaded(Object rsrcID, Object rsrc)
    {
	// there is only one thing we could be waiting for...
	moreOfTextStringLoaded((String)rsrc);
    }

    private void textStringLoaded(String text)
    {
	this.text = text;
	textViewerForm.setText(text);
	try {
	this.stringLoadThread.join();
	}
	catch (InterruptedException e) {}
	//TODO: handle
	this.stringLoadThread = null; //so gc can get it
	System.gc();
    }

    public void moreOfTextStringLoaded(String text)
    {
	this.text = text;
	textViewerForm.setText(text);
    }

}