Android 命令：實現啟動一個apk

1、產生背景：

為了調試方便，常常希望通過知道apk的路徑，直接去啟動它，所以就寫了這個命令

2、使用方法：

adb push launch /data/

adb push launch.jar /data/

adb shell

launch

其實放到/system/下面也可以，把jar包放到/system/framework/下面，把launch命令放到/system/bin/下面，

然後adb shell 進去，直接執行launch就可以了，傳入apk的路徑參數。

3、eg：

launch /data/app/abc.apk

4、代碼：

Android.mk：

# Copyright 2008 The Android Open Source Project#LOCAL_PATH:= $(call my-dir)include $(CLEAR_VARS)LOCAL_SRC_FILES := $(call all-subdir-java-files)LOCAL_MODULE := launch include $(BUILD_JAVA_LIBRARY)

launch：

# Script to start "launch" on the device, which has a very rudimentary# shell.#export CLASSPATH=/system/framework/launch.jarexec app_process /system/bin com.android.commands.launch.Launch $*#export CLASSPATH=/data/launch.jar#exec app_process /data/ com.android.commands.launch.Launch $*

Launch.java:

/* * Copyright (C) 2007 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package com.android.commands.launch;import android.app.ActivityManager;import android.app.ActivityManagerNative;import android.app.IActivityController;import android.app.IActivityManager;import android.app.IInstrumentationWatcher;import android.app.Instrumentation;import android.content.ComponentName;import android.content.Context;import android.content.IIntentReceiver;import android.content.Intent;import android.content.pm.IPackageManager;import android.content.pm.ResolveInfo;import android.net.Uri;import android.os.Bundle;import android.os.ParcelFileDescriptor;import android.os.RemoteException;import android.os.ServiceManager;import android.os.SystemProperties;import android.os.UserHandle;import android.util.AndroidException;import android.view.Display;import android.view.IWindowManager;import java.io.BufferedReader;import java.io.File;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintStream;import java.net.URISyntaxException;import java.util.HashSet;import java.util.List;import android.util.Log;import android.content.pm.ApplicationInfo;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.content.pm.PackageUserState;import android.content.pm.PackageParser;import android.util.DisplayMetrics;/** * Launch   */public class Launch {    private static final String TAG = "Launch";    private IPackageManager mPM;    private IActivityManager mAm;    /**     * Command-line entry point.     *     * @param args The command-line arguments     */    public static void main(String[] args) {            (new Launch()).run(args);    }    private void init(){IPackageManager mPM = IPackageManager.Stub.asInterface(ServiceManager.getService("package"));mAm = ActivityManagerNative.getDefault();    }    private void run(String[] args) {init();        if (args.length < 1) {            showUsage();            return;        }        String command = args[0];if(args.length == 1){PackageInfo info = getPackageArchiveInfo(command, PackageManager.GET_ACTIVITIES);if(info != null){ApplicationInfo appInfo = info.applicationInfo;String packageName = appInfo.packageName;String className = info.activities[0].name;log("-->packageName=" + packageName);log("-->className=" + className);log("-->all activities:");for(int i = 0; i < info.activities.length; i++){log(info.activities[i]);}startApp(packageName, className);//String execCmd= "am start -n " + packageName + "/" + className;//log(execCmd);//runLinuxCmd(execCmd);}return ;}System.err.println("Error: Invalid arguments for command: " + command);        showUsage();    }    private PackageInfo getPackageArchiveInfo(String archiveFilePath, int flags) {        PackageParser packageParser = new PackageParser(archiveFilePath);        DisplayMetrics metrics = new DisplayMetrics();        metrics.setToDefaults();        final File sourceFile = new File(archiveFilePath);        PackageParser.Package pkg = packageParser.parsePackage(                sourceFile, archiveFilePath, metrics, 0);        if (pkg == null) {            return null;        }        if ((flags & PackageManager.GET_SIGNATURES) != 0) {            packageParser.collectCertificates(pkg, 0);        }        PackageUserState state = new PackageUserState();        return PackageParser.generatePackageInfo(pkg, null, flags, 0, 0, null, state);    }    private Process runLinuxCmd(String cmd){Process process = null;try{process = Runtime.getRuntime().exec(cmd);return process;} catch(IOException e){Log.d(TAG, "runLinuxCmd error:" +e);}return process;    }    private void startApp(String packageName, String className){Intent intent = new Intent();intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);ComponentName comp = new ComponentName(packageName, className);intent.setComponent(comp);try{mAm.startActivityAndWait(null, intent, "",null, null, 0, 0, "", null, null, 0);}catch(RemoteException e){log("startApp error:"  + e);}    }    private void showUsage() {        System.err.println("usage: input ...");        System.err.println("       launch ");    }    private void log(Object o){System.err.println("" + o);    }}

放到源碼/framework/base/cmds/launch/目錄下面編譯就可以了！

親測，可以的，祝你好運！