?? detectmma.java
字號:
package com.j2medev.ch8.mmapi;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.Manager;
public class DetectMMA extends MIDlet implements CommandListener {
private Display display = null;
private Form form = null;
public static final Command exitCommand = new Command("退出",Command.EXIT, 1);
public void startApp() {
if(display == null){
display = Display.getDisplay(this);
form = new Form("MMAPI特性");
form.addCommand(exitCommand);
form.setCommandListener(this);
//判斷系統是否支持MMAPI,可能版本為1.1或者1.0
String version = System.getProperty("microedition.media.version");
if(version != null){
//支持MMAPI
form.append("MMAPI版本:"+version+"\n");
//支持協議列表
String[] sp_protocal = Manager.getSupportedProtocols(null);
form.append("支持協議"+"\n");
for(int i = 0;i<sp_protocal.length;i++){
form.append(sp_protocal[i]+"\n");
}
//支持媒體格式列表
String[] sp_type = Manager.getSupportedContentTypes(null);
form.append("支持媒體類型"+"\n");
for(int j = 0;j<sp_type.length;j++){
form.append(sp_type[j]+"\n");
}
//拍照格式
form.append("支持拍照格式"+"\n");
form.append(System.getProperty("video.snapshot.encodings")+"\n");
//是否支持混音
form.append("支持混音:"+(System.getProperty("supports.mixing").equals("true")?"是":"否")+"\n");
form.append("音頻捕獲:"+(System.getProperty("supports.audio.capture").equals("true")?"是":"否")+"\n");
form.append("視頻捕獲:"+(System.getProperty("supports.video.capture").equals("true")?"是":"否")+"\n");
form.append("支持記錄:"+(System.getProperty("supports.recording").equals("true")?"是":"否")+"\n");
//音頻和視頻編碼格式
form.append("音頻編碼:"+System.getProperty("audio.encodings")+"\n");
form.append("視頻編碼:"+System.getProperty("video.encodings")+"\n");
}else{
form.append("不支持MMAPI");
}
display.setCurrent(form);
}
display.setCurrent(form);
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
public void commandAction(Command cmd,Displayable displayable){
//退出應用程序
if(cmd == exitCommand){
destroyApp(false);
notifyDestroyed();
}
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -