获得系统手机信息的代码.rar_j2me

import javax.microedition.lcdui.*; public class SCanvas extends Canvas { private Display display; public SCanvas(Display d) { super(); display = d; } void start() { display.setCurrent(this); repaint(); } public void paint(Graphics g) { // Clear the canvas g.setColor(0, 0, 0); // black g.fillRect(0, 0, getWidth(), getHeight()); g.setColor(255, 255, 255); // white // Draw the available screen size int y = 0; String screenSize = "Screen size: " + Integer.toString(getWidth()) + " x " + Integer.toString(getHeight()); g.drawString(screenSize, 0, y, Graphics.TOP | Graphics.LEFT); // Draw the number of available colors y += Font.getDefaultFont().getHeight(); String numColors = "# of colors: " + Integer.toString(display.numColors()); g.drawString(numColors, 0, y, Graphics.TOP | Graphics.LEFT); // Draw the number of available alpha levels y += Font.getDefaultFont().getHeight(); String numAlphas = "# of alphas: " + Integer.toString(display.numAlphaLevels()); g.drawString(numAlphas, 0, y, Graphics.TOP | Graphics.LEFT); // Draw the amount of total and free memory Runtime runtime = Runtime.getRuntime(); y += Font.getDefaultFont().getHeight(); String totalMem = "Total memory: " + Long.toString(runtime.totalMemory() / 1024) + "KB"; g.drawString(totalMem, 0, y, Graphics.TOP | Graphics.LEFT); y += Font.getDefaultFont().getHeight(); String freeMem = "Free memory: " + Long.toString(runtime.freeMemory() / 1024) + "KB"; g.drawString(freeMem, 0, y, Graphics.TOP | Graphics.LEFT); } }