J2me MIDlet操作手机功能性用法总结（如调用其他程序或者调用其他MIDlet）

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方法1：MIDlet 通过 platformRequest，调用手机本地应用程序。

 示例：

S60中调用

platformRequest("nativeapp:application-exe=MediaPlayer.exe;content=E:/Feelings.MP3;application-args=-ExampleArgument");

S40中调用

platformRequest("localapp://gallery/show?folder=C:/predefgallery/predefphotos");

 

 

方法2：MIDlet通过 platformRequest，调用其他MIDlet。

示例：

S40中

platformRequest("localapp://jam/launch?midlet-name=ArcadeGames;midlet-vendor=Acme;sounds=OFF;difficulty=easy;wizard_mode=ON"); 

MIDlet启动参数说明

Nokia-MIDlet-Launch-Params: sounds,difficulty,wizard_mode

The ArcadeGames MIDlet can access the parameters as follows:

System.getProperty("sounds");
System.getProperty("difficulty");
System.getProperty("wizard_mode"); 

platformRequest("javaapp:midlet-name=ArcadeGames;midlet-vendor=Acme;sounds=OFF;difficulty=easy;wizard_mode=ON");

通过MIDlet的UID启动
 
platformRequest("javaapp:midlet-uid=0xE1000000;sounds=OFF;difficulty=easy;wizard_mode=ON);

 
 
 

方法3：手机本地应用程序调用MIDlet

代码如下：

The following example code shows how to launch a MIDlet from a native Symbian application.

    RProcess rProcess;
    TInt err = rProcess.Create(_L("javalauncher.exe"), _L("midlet-uid=0x10137c4d;startMode=startFromCmdLine;sound=ON;landscapeMode=true;"));
    if (KErrNone == err)
    {
        TRequestStatus status;
        rProcess.Logon(status);
        rProcess.Resume();
        // now wait until javalauncher exits
        User::WaitForRequest(status);
        if (status.Int() != KErrNone)
        {
            // Launching midlet failed
            err = status.Int();
        }
    }
    else
    {        
        // Cannot start javalauncher
    }
    rProcess.Close();

The following example code shows how to launch the same MIDlet from a Symbian application using Open C APIs. 

include <glib.h>
gint exitStatus = 0;
// Start javalauncher and wait until it starts midlet
gboolean startOK = g_spawn_command_line_sync(
         "javalauncher midlet-uid=0x10137c4d;startMode=startFromCmdLine;sound=ON;landscapeMode=true;",
        NULL,
        NULL,
        &exitStatus,
        NULL);
if (startOK)
{
    if (exitStatus != 0)
    {
        // launching midlet failed, (Symbian) error code in exitStatus
    }
}
else
{
    // Cannot start javalauncher
}

 

 

方法4：MIDlet重新启动

In Series 40 and Symbian, when a MIDlet is already running and it is re-launched, it is set on the foreground and can receive the new command line parameters.

In Symbian, every time a MIDlet is re-launched, the integer value in com.nokia.mid.cmdline.instance system property is incremented by one. This value can be used to check whether the MIDlet has really been re-launched or just brought to the foreground. The old values of the command line arguments are not changed unless new command line values redefine them. If JAD attribute Nokia-MIDlet-Background-Event has the value pause, the startApp method is called every time the MIDlet is brought to foreground. This provides an easy way to acquire new command line parameters.

 

方法5：从手机浏览器网站链接启动MIDlet

n Symbian, when a link with the javaapp: or localapp://jam/launch? URI scheme is opened on a web page, the corresponding MIDlet is launched. If JavaScript is enabled, a JavaScript function may also activate the link.

Before the MIDlet is started from a web browser link, the auto invocation permission of the MIDlet is checked. This means that in case of third-party MIDlets, the user is always asked at least once to confirm the MIDlet launch.

If you use non-US-ASCII characters in the URL, you must use UTF-8 encoding. Also spaces must be encoded, for example:

javaapp:midlet-name=Arcade Pro;midlet-vendor=Acme;midlet-n=1;sounds=OFF;difficulty=medium

 

方法6：MIDlet platformRequest其他常用功能

打电话:

platformRequest("tel:+19143680400"); 

打开网页:

platformRequest("http://www.forum.nokia.com/"); 

打开1个RTSP流连接:

platformRequest("rtsp://ra.yle.fi/ramgen/tv2/viihde/zencafe.rm"); 

利用本地默认软件打开1个本地文件

platformRequest("file://E/image.png"); 

打开短信编辑器，并发短信到指定号码

platformRequest("sms:+19143680400"); 

 

 

其他常用列表及功能：

使用连接后提示用语列表

Table: Supported URI schemes:

URI scheme	Supported in Symbian	Supported in Series 40	Java user confirmation prompt	Behavior
http:	Yes	Yes	"Allow this application to use network for sending/receiving data?"	Open URI in Browser
https:	Yes	Yes	"Allow this application to use network for sending/receiving data?"	Open URI in Browser
rtsp:	Yes	Product dependent	No user prompt	RealPlayer starts, asks 'Connection to server needed. Connect?' Y/N
file:	Yes	No	"Allow this application start an application?"	Open file in MIME type specific application
mailto:	Yes	Product dependent	No user prompt	Open E-mail or MMS editor
wtai:	Yes	No	"Allow this application start an application?"	Like tel: / open address book for edit / send DTMF sequence
mms:	Yes	No	No user prompt	RealPlayer starts, asks 'Connection to server needed. Connect?' Y/N
cti:	Yes	No	No user prompt	Computer telephony integration. Like tel:
mmsto:	Yes	No	No user prompt	Open MMS editor
sms:	Yes	No	No user prompt	Open SMS editor
localapp:	Yes	Yes	"Allow this application start an application?"	Start local application In Series 40, only allowed for manufacturer and operator MIDlets. In Symbian Java all domains work but only some applications are supported. See following table.
javaapp:	Yes	No	"Allow this application start an application?"	Start Java application For more information, see Launching a MIDlet from another MIDlet.
nativeapp:	Yes	No	No user prompt	Start native application. Only allowed for manufacturer and operator MIDlets. For more information, see Launching a native application from a MIDlet.
tel:	Yes	Yes	No user prompt	Asks confirmation before making phone call
Added protocols	Yes	No	"Allow this application start an application?"

In Symbian, localapp supports launching only the following applications:

Symbian本地应用程序列表

Table: Localapp usage in Symbian

Application	Accepted arguments
Contacts	localapp://contacs
Calendar	localapp://calendar/Today localapp://calendar
Messaging	localapp://messaging

 

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