我在一个包中有两个类，一个扩展 lcudi.Canvas，另一个扩展 lwuit.Form
我在表单上创建了两个按钮
我的目的是在按下其中一个按钮时显示画布。
在我看来，这个功能应该显示 canvas 。
设置全屏模式（真）；但事实并非如此。
这是画布类
[code]
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.rms.*;
import javax.microedition.media.*;
import javax.microedition.media.control.*;
import java.io.*;
import java.util.*;
import javax.microedition.rms.*;
public class MainCanvas extends Canvas implements Runnable {
HelloLWUITMidlet mid;
int screen_width;
int screen_height;
int mode;
int selected;
String current_time;
int[] time_numbers;
long current_time_milli;
long start_timestamp;
int selected_preset;
static String s;
Random generator;
final static int MODE_SETUP = 0;
final static int MODE_RUNNING = 1;
final static int MODE_RINGING = 2;
final static int MODE_PRESETS_TYPE = 3;
final static int MODE_PRESETS_MODE = 4;
public MainCanvas(HelloLWUITMidlet h) {
mid =h;
this.setFullScreenMode(true);
new Thread(this).start();
screen_width = this.getWidth();
screen_height = this.getHeight();
time_numbers = new int[4];
setCurrentTime();
initImages();
generator = new Random(System.currentTimeMillis());
mode = MODE_SETUP;
selected = 0;
}
Image back;
Image numbers;
Image font;
int numberFontWidths[];
int numberFontOffsets[];
int numberFontCodes[];
int fontData[] = new int[]
{
0, 0, 0, 0, 4,
0, 0, 4, 16, 3,
4, 0, 4, 16, 4,
8, 0, 10, 16, 10,
18, 0, 7, 16, 7,
25, 0, 9, 16, 9,
34, 0, 9, 16, 8,
43, 0, 2, 16, 2,
45, 0, 4, 16, 4,
49, 0, 4, 16, 4,
53, 0, 6, 16, 6,
59, 0, 11, 16, 10,
70, 0, 3, 16, 3,
73, 0, 5, 16, 5,
78, 0, 3, 16, 3,
81, 0, 5, 16, 4,
86, 0, 8, 16, 8,
94, 0, 4, 16, 4,
98, 0, 7, 16, 6,
105, 0, 7, 16, 7,
112, 0, 8, 16, 8,
120, 0, 7, 16, 6,
127, 0, 7, 16, 7,
134, 0, 6, 16, 6,
140, 0, 7, 16, 7,
147, 0, 7, 16, 7,
154, 0, 3, 16, 3,
157, 0, 3, 16, 3,
160, 0, 11, 16, 10,
171, 0, 11, 16, 10,
182, 0, 11, 16, 10,
193, 0, 6, 16, 6,
199, 0, 13, 16, 13,
212, 0, 8, 16, 8,
220, 0, 8, 16, 8,
228, 0, 8, 16, 7,
236, 0, 9, 16, 9,
245, 0, 6, 16, 6,
0, 16, 6, 16, 6,
6, 16, 9, 16, 9,
15, 16, 10, 16, 9,
25, 16, 4, 16, 3,
29, 16, 6, 16, 5,
35, 16, 8, 16, 8,
43, 16, 6, 16, 6,
49, 16, 11, 16, 11,
60, 16, 10, 16, 9,
70, 16, 10, 16, 9,
80, 16, 8, 16, 7,
88, 16, 10, 16, 9,
98, 16, 8, 16, 7,
106, 16, 7, 16, 7,
113, 16, 6, 16, 6,
119, 16, 9, 16, 9,
128, 16, 7, 16, 7,
135, 16, 12, 16, 11,
147, 16, 7, 16, 7,
154, 16, 7, 16, 6,
161, 16, 7, 16, 6,
168, 16, 4, 16, 4,
172, 16, 5, 16, 4,
177, 16, 4, 16, 4,
181, 16, 13, 16, 13,
194, 16, 6, 16, 6,
200, 16, 6, 16, 6,
206, 16, 8, 16, 7,
214, 16, 8, 16, 7,
222, 16, 6, 16, 6,
228, 16, 8, 16, 7,
236, 16, 7, 16, 7,
243, 16, 4, 16, 4,
247, 16, 8, 16, 7,
0, 32, 8, 16, 7,
8, 32, 3, 16, 3,
11, 32, 3, 16, 3,
14, 32, 7, 16, 6,
21, 32, 3, 16, 3,
24, 32, 11, 16, 11,
35, 32, 8, 16, 7,
43, 32, 7, 16, 7,
50, 32, 8, 16, 7,
58, 32, 8, 16, 7,
66, 32, 5, 16, 4,
71, 32, 5, 16, 5,
76, 32, 4, 16, 4,
80, 32, 7, 16, 7,
87, 32, 6, 16, 6,
93, 32, 10, 16, 9,
103, 32, 6, 16, 6,
109, 32, 6, 16, 6,
115, 32, 6, 16, 5,
121, 32, 6, 16, 6,
127, 32, 6, 16, 6,
133, 32, 6, 16, 6,
139, 32, 11, 16, 10
};
int[] fontCodes = new int[]
{
0x0020,
0x0021,
0x0022,
0x0023,
0x0024,
0x0025,
0x0026,
0x0027,
0x0028,
0x0029,
0x002a,
0x002b,
0x002c,
0x002d,
0x002e,
0x002f,
0x0030,
0x0031,
0x0032,
0x0033,
0x0034,
0x0035,
0x0036,
0x0037,
0x0038,
0x0039,
0x003a,
0x003b,
0x003c,
0x003d,
0x003e,
0x003f,
0x0040,
0x0041,
0x0042,
0x0043,
0x0044,
0x0045,
0x0046,
0x0047,
0x0048,
0x0049,
0x004a,
0x004b,
0x004c,
0x004d,
0x004e,
0x004f,
0x0050,
0x0051,
0x0052,
0x0053,
0x0054,
0x0055,
0x0056,
0x0057,
0x0058,
0x0059,
0x005a,
0x005b,
0x005c,
0x005d,
0x005e,
0x005f,
0x0060,
0x0061,
0x0062,
0x0063,
0x0064,
0x0065,
0x0066,
0x0067,
0x0068,
0x0069,
0x006a,
0x006b,
0x006c,
0x006d,
0x006e,
0x006f,
0x0070,
0x0071,
0x0072,
0x0073,
0x0074,
0x0075,
0x0076,
0x0077,
0x0078,
0x0079,
0x007a,
0x007b,
0x007c,
0x007d,
0x007e
};
int[] fontKerning = new int[]
{
70, 44, -1,
70, 46, -1,
76, 86, -1,
76, 89, -1,
80, 44, -2,
80, 46, -2,
84, 44, -1,
84, 45, -1,
84, 46, -1,
84, 97, -1,
84, 99, -1,
84, 101, -1,
84, 111, -1,
84, 115, -1,
86, 44, -1,
86, 46, -1,
87, 44, -1,
87, 46, -1,
89, 44, -2,
89, 45, -1,
89, 46, -2,
89, 58, -1,
89, 59, -1,
89, 97, -1,
89, 101, -1,
89, 111, -1,
114, 44, -1,
114, 46, -1
};
int[] fontCodeTable;
public void initImages() {
try{
// back = Image.createImage("/numbers.png");
numbers = Image.createImage("/numbers.png");
font = Image.createImage("/font.png");
numberFontWidths = new int[]
{
17,10,15,15,18,15,16,15,15,16,8
};
int offset = 0;
numberFontOffsets = new int[numberFontWidths.length];
for(int i=0;i<numberFontWidths.length;i++) {
numberFontOffsets[i] = offset;
offset+=numberFontWidths[i];
}
numberFontCodes = new int[256];
numberFontCodes[(int) "0".charAt(0)] = 0;
numberFontCodes[(int) "1".charAt(0)] = 1;
numberFontCodes[(int) "2".charAt(0)] = 2;
numberFontCodes[(int) "3".charAt(0)] = 3;
numberFontCodes[(int) "4".charAt(0)] = 4;
numberFontCodes[(int) "5".charAt(0)] = 5;
numberFontCodes[(int) "6".charAt(0)] = 6;
numberFontCodes[(int) "7".charAt(0)] = 7;
numberFontCodes[(int) "8".charAt(0)] = 8;
numberFontCodes[(int) "9".charAt(0)] = 9;
numberFontCodes[(int) ":".charAt(0)] = 10;
fontCodeTable = new int[256];
for(int i=0;i<fontCodes.length;i++)
fontCodeTable[fontCodes[i]] = i;
} catch(Exception e) {
}
}
public void setCurrentTime() {
current_time = "";
for(int i=0;i<4;i++) {
current_time = current_time + Integer.toString(time_numbers[i]);
if(i==1)
current_time = current_time + ":";
}
}
public void run() {
while(true) {
update();
Refresh();
this.repaint();
long nexttime = System.currentTimeMillis() +60;
// set your framerate here
while(System.currentTimeMillis() < nexttime)
Thread.yield();
}
}
int blinker;
public void update() {
switch(mode) {
case MODE_SETUP:
case MODE_PRESETS_TYPE:
case MODE_PRESETS_MODE:
blinker++;
break;
case MODE_RUNNING:
int left = (int) (current_time_milli - (System.currentTimeMillis() - start_timestamp));
if(left<=0) {
playMidi();
mode = MODE_RINGING;
}
int minutes = left / (60*1000);
int seconds = (left-minutes*60*1000)/1000;
String min_string = ""+minutes;
if(min_string.length()==1)min_string = "0"+min_string;
String sec_string = ""+seconds;
if(sec_string.length()==1)sec_string = "0"+sec_string;
current_time = min_string+":"+sec_string;
break;
case MODE_RINGING:
blinker++;
shake_x = (generator.nextInt()%5);
shake_y = (generator.nextInt()%5);
break;
}
}
public void keyPressed(int key) {
if(mode == MODE_SETUP) {
int number_pressed = -1;
if(key == KEY_NUM0)
number_pressed = 0;
if(key == KEY_NUM1)
number_pressed = 1;
if(key == KEY_NUM2)
number_pressed = 2;
if(key == KEY_NUM3)
number_pressed = 3;
if(key == KEY_NUM4)
number_pressed = 4;
if(key == KEY_NUM5)
number_pressed = 5;
if(key == KEY_NUM6 & selected != 2)
number_pressed = 6;
if(key == KEY_NUM7 & selected != 2)
number_pressed = 7;
if(key == KEY_NUM8 & selected != 2)
number_pressed = 8;
if(key == KEY_NUM9& selected != 2)
number_pressed = 9;
if(number_pressed>-1 & selected < 4) {
time_numbers[selected] = number_pressed;
selected++;
} else {
int action = getGameAction(key);
if(action == UP) {
if(selected<4) {
if(selected==2)
time_numbers[2] = (time_numbers[2]+1)%6;
else
time_numbers[selected] = (time_numbers[selected]+1)%10;
} else {
if(selected>4)
selected--;
else
selected=0;
}
}
if(action == DOWN) {
if(selected<4) {
int new_val = time_numbers[selected]-1;
if(selected==2) {
if(new_val==-1)
new_val=5;
} else {
if(new_val==-1)
new_val=9;
}
time_numbers[selected] = new_val;
} else {
selected++;
if(selected>6)
selected = 6;
}
}
if(action == FIRE) {
if(selected<4)
selected++;
else {
if(selected==4) {
start_timestamp = System.currentTimeMillis();
int minutes = ((time_numbers[0]*10) + time_numbers[1]);
int seconds = ((time_numbers[2]*10) + time_numbers[3])+1;
current_time_milli = (minutes * 60 * 1000) + (seconds * 1000);
mode = MODE_RUNNING;
}
if(selected==5) {
selected=0;
mode = MODE_PRESETS_TYPE;
}
if(selected==6) {
mid.notifyDestroyed();
}
}
}
if(action == LEFT & selected>0) {
selected--;
}
if(action == RIGHT & selected<6)
selected++;
}
} else if(mode==MODE_PRESETS_TYPE) {
int action = getGameAction(key);
if(action == UP && selected>0)
selected--;
if(action == DOWN && selected<2)
selected++;
if(action == FIRE) {
selected_preset = selected;
selected = 0;
mode = MODE_PRESETS_MODE;
}
} else if(mode==MODE_PRESETS_MODE)
{
int action = getGameAction(key);
if(action == UP && selected>0)
selected--;
if(action == DOWN && selected<1)
selected++;
if(action == FIRE) {
int[] presets = new int[]
{
0,3,0,0,
0,4,3,0,
0,5,3,0,
0,5,0,0,
0,6,5,0,
0,8,0,0,
};
int offset = selected * 12 + selected_preset * 4;
time_numbers[0]=presets[offset++];
time_numbers[1]=presets[offset++];
time_numbers[2]=presets[offset++];
time_numbers[3]=presets[offset++];
mode = MODE_SETUP;
selected = 4;
}
}
else {
int action = getGameAction(key);
if(action==FIRE)
{
mode = MODE_SETUP;
stopMidi();
}
}
if(mode != MODE_RUNNING)
setCurrentTime();
}
public void keyReleased(int key) {
}
int shake_x;
int shake_y;
public void paint(Graphics g) {
int color = 0xFFFF00;
if(mode == MODE_RINGING && (blinker%10>5))
color = 0xFF0000;
g.setColor(color);
g.fillRect( 0, 0,screen_width ,screen_height );
Graphics gg ;
color = 0x00FF00;
g.setColor(color);
g.fillRect(0,50,50,0);
color = 0x000FF;
g.drawString( s ,40,50, 0);
int x = (screen_width-128)>>1;
int y = (screen_height-128)>>1;
if(mode != MODE_PRESETS_TYPE && mode != MODE_PRESETS_MODE)
paintNumbersCentered(g);
switch(mode) {
case MODE_SETUP:
y = (screen_height>>1)+10;
if(selected!=4 | (blinker%20>10)) {
paintTextCentered(g,"START",y);
}
y+=15;
if(selected!=5 | (blinker%20>10)) {
paintTextCentered(g,"PRESETS",y);
}
y+=15;
if(selected!=6 | (blinker%20>10)) {
paintTextCentered(g,"EXIT",y);
}
break;
case MODE_PRESETS_TYPE:
y = (screen_height>>1)-10;
if(selected!=0 | (blinker%20>10)) {
paintTextCentered(g,"Supreme Runny",y);
}
y+=20;
if(selected!=1 | (blinker%20>10)) {
paintTextCentered(g,"Perfect Plasma",y);
}
y+=20;
if(selected!=2 | (blinker%20>10)) {
paintTextCentered(g,"Hard Boiled",y);
}
break;
case MODE_PRESETS_MODE:
y = (screen_height>>1)-15;
if(selected!=0 | (blinker%20>10)) {
paintTextCentered(g,"Eggs in cold water",y);
y+=13;
paintTextCentered(g,"Start when water is",y);
y+=13;
paintTextCentered(g,"boiling",y);
}
y = (screen_height>>1)+30;
if(selected!=1 | (blinker%20>10)) {
paintTextCentered(g,"Start when putting",y);
y+=13;
paintTextCentered(g,"eggs in boiling water",y);
}
break;
}
}
public void paintNumbersCentered(Graphics g) {
int width = 0;
for(int i=0;i<current_time.length();i++) {
int c = (int) current_time.charAt(i);
width+=numberFontWidths[numberFontCodes[c]];
}
int x = (screen_width - width) >>1;
int y = (screen_height >>1)-15;
for(int i=0;i<current_time.length();i++) {
int c = (int) current_time.charAt(i);
int code = numberFontCodes[c];
int char_w = numberFontWidths[code];
int char_off = numberFontOffsets[code];
int sel = selected;
if(sel>1)sel++;
if(sel!=i | (blinker%20>10)) {
g.setClip(x+shake_x,y+shake_y,char_w,20);
g.drawImage(numbers,x-char_off+shake_x,y+shake_y,0);
}
x+=char_w;
}
}
public void Refresh()
{
Date t = new java.util.Date(System.currentTimeMillis());
s = t.toString();
}
public void paintTextCentered(Graphics g,String text,int y) {
int width = 0;
int textlen = text.length();
for(int i=0;i<textlen;i++) {
int code = fontCodeTable[(int)text.charAt(i)];
int char_width = fontData[code*5+4];
width+=char_width;
}
int x = (screen_width-width)>>1;
int last_char = -1;
for(int i=0;i<textlen;i++) {
int this_char = (int)text.charAt(i);
int code = fontCodeTable[this_char];
int offset = code*5;
int sx = fontData[offset++];
int sy = fontData[offset++];
int sw = fontData[offset++];
int sh = fontData[offset++];
int aw = fontData[offset++];
if(i>0) {
int koff = 0;
int klen = fontKerning.length / 3;
for(int k=0;k<klen;k++) {
koff = k*3;
if(last_char==fontKerning[koff] && this_char==fontKerning[koff+1]) {
x+=fontKerning[koff+2];
break;
}
}
}
if(sw>0 && sh>0) {
g.setClip(x,y,sw,sh);
g.drawImage(font,x-sx,y-sy,0);
}
x+=aw;
last_char = (int)text.charAt(i);
}
}
Player player = null;
public void stopMidi() {
try{
if(player!=null) {
player.stop();
player.deallocate();
}
player = null;
System.gc();
} catch(Exception e) {
System.out.println(e.getMessage());
}
}
public void playMidi() {
try {
stopMidi();
player = Manager.createPlayer(this.getClass().getResourceAsStream("/ring.mid"),"audio/midi");
player.realize();
VolumeControl vc = (VolumeControl) player.getControl("VolumeControl");
vc.setLevel(100);
player.start();
} catch(Exception e) {
System.out.println(e.getMessage());
}
}
protected void hideNotify() {
}
protected void showNotify() {
}
}
[/代码]
那就是表格
[code]
import Pes.*;
//import Pes.MainCanvas;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import com.sun.lwuit.layouts.*;
import com.sun.lwuit.*;
import javax.microedition.lcdui.Canvas;
import com.sun.lwuit.events.*;
import com.sun.lwuit.plaf.*;
public class HelloLWUITMidlet extends MIDlet implements ActionListener {
HelloLWUITMidlet hh;
public void startApp() {
com.sun.lwuit.Display.init(this);
final com.sun.lwuit.Form f = new com.sun.lwuit.Form( " SOFTWARE SCREENS");
final MainCanvas m = new MainCanvas(hh);
f.getStyle().setBgColor(0X99CCFF);
BoxLayout boxlayout =new BoxLayout(BoxLayout.X_AXIS);
com.sun.lwuit.Command exitCommand = new com.sun.lwuit.Command("Exit");
f.addCommand(exitCommand);
f.addCommandListener(this);
final Button button = new Button(" GOALS ");
final Button button1 = new Button(" TIME SETTING");
Style btnstyle = button.getSelectedStyle() ;
Style btnstyle1 = button1.getSelectedStyle() ;
btnstyle.setBgColor(0X0000FF);
btnstyle.setFgColor(0XFFFFFF);
btnstyle1.setBgColor(0X0000FF);
btnstyle1.setFgColor(0XFFFFFF);
// button.getStyle().setBgColor(0X99CCFF);
button1.addActionListener(new ActionListener() {
private int c = 0;
public void actionPerformed(ActionEvent ae) {
c++;
// Display.init(m);
m.setFullScreenMode(true);
}
});
button.addActionListener(new ActionListener() {
private int c = 0;
public void actionPerformed(ActionEvent ae) {
c++;
m.setFullScreenMode(true);
}
});
f.addComponent(button1);
f.addComponent(button);
f.show();
}
public void pauseApp() {}
public void destroyApp(boolean unconditional) {}
public void actionPerformed(ActionEvent ae) {
notifyDestroyed();
}
}
[/code]
注意：- 如果您需要我的代码中包含的图像和声音来测试我的应用程序，您可以从这里下载 eggtime 应用程序 http://www.bambalam.se/eggtimer/