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Multi-Process Interaction
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Last updated: 2024-11-21 17:28:19
Multi-Process Interaction
Last updated: 2024-11-21 17:28:19
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The mini program SDK creates a separate process for each mini program, isolating it from the host application's process.
The SDK provides a unified API for communication between the mini program process and the host process.

Check if current process is a mini program process

API description: 
/**
 * Whether the current process is a mini program process
 * @param context
 * @
 */
public static boolean isMiniProcess(Context context)

Host process calls mini program process plugin

1. To implement a sub-process plugin extension

Implementation steps:
Inherit BaseIpcPlugin.
Annotate the class with @IpcMiniPlugin.
Annotate the invoke method with @IpcEvent and define the plugin event name.
Sample code:
@IpcMiniPlugin
public class MiniProcessIpcPlugin extends BaseIpcPlugin {
    public static final String EVENT = "MiniProcessPlugin";

    @Override
    @IpcEvent(EVENT)
    public void invoke(IpcRequestEvent req) {

        String value = req.data.getString("key");

        Log.d(ModuleApplet.TAG, "current process:" + ProcessUtil.getProcessName(req.context) + "|call from main process: " + value);
        Bundle resp = new Bundle();
        resp.putString("key", "i am ok");
        req.ok(resp);
    }
}

2. Plug-ins that call mini program process in main process

API description
/**
 * Call a mini-program process plugin for mini program introduction, and this method can only be called from the main process
 *
 ///@param appId Mini program ID
 * @param eventId
 * @param request
 * @param callback
 */
public static void callMiniProcessPlugin(String appId, String eventId, Bundle request, IpcCallback callback) 
  
/**
 * Call a mini program process plugin for develop/preview mini program, and this method can only be called from the main process
 *
 ///@param appId Mini program ID
 * @param appVerType Mini program type. See MiniApp
 * @param eventId
 * @param request
 * @param callback
 */
public static void callMiniProcessPlugin(String appId, int appVerType, String eventId, Bundle request, IpcCallback callback)
Sample code:
TmfMiniSDK.callMiniProcessPlugin("", MiniProcessIpcPlugin.EVENT, bundle, new IpcCallback() {
    @Override
    public void result(boolean isSucc, Bundle response) {
        Log.d(ModuleApplet.TAG, "current process:" + ProcessUtil.getProcessName(ModuleApplet.sApp) + "|isSucc:" + isSucc + "|callback data: " + response.getString("key"));
    }
});

Calling host process plugin in mini program process

1. To implement a host process plugin extension

Implementation steps：
Inherit BaseIpcPlugin.
Annotate the class with @IpcMainPlugin.
Annotate the invoke method with @IpcEvent and define the plugin event name.
Sample code:
@IpcMainPlugin
public class MainProcessIpcPlugin extends BaseIpcPlugin {
    public static final String EVENT = "MainProcessPlugin";

    @Override
    @IpcEvent(EVENT)
    public void invoke(IpcRequestEvent req) {
        String value = req.data.getString("key");

        Log.d(ModuleApplet.TAG, "current process|" + ProcessUtil.getProcessName(req.context) + "|call from mini process:" + value);
        Bundle resp = new Bundle();
        resp.putString("key", "i am ok");
        req.ok(resp);
    }
}

2. Calling host process plugin in mini program process

API description
Parameters：
eventId: Indicates event name defined by host process
request: Indicates parameters passed from mini program process to host process plugin
ipcCallBack: Indicates callback to receive the host process
/**
 * Calls the main process Plugin, and this method can only be called in the process of mini process
 *
 * @param eventId
 * @param request
 * @param callback
 */
public static void callMainProcessPlugin(String eventId, Bundle request, IpcCallback callback)
Sample code:
TmfMiniSDK.callMainProcessPlugin(MainProcessIpcPlugin.EVENT, bundle, new IpcCallback() {
    @Override
    public void result(boolean isSucc, Bundle response) {
        Log.d(ModuleApplet.TAG, "current process:" + ProcessUtil.getProcessName(ModuleApplet.sApp) +  "|isSucc:" + isSucc +   "|callback data:" + response.getString("key"));
    }
});

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