***android 4.0.4系统下实现apk的静默安装和启动

  最近在android 4.0.4系统下实现apk的静默安装和启动的功能，这里和大家分享一下，希望能有所帮助。

源码如下：

import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;

public class InstallApkUtils {

    public static void installAndStartApk(final Context context, final String apkPath) {
        if ((apkPath==null) || (context==null)) {
            return;
        }

        File file = new File(apkPath);
        if (file.exists() == false) {
            return;
        }

        new Thread() {
            public void run() {
                String packageName = getUninstallApkPackageName(context, apkPath);
                if (silentInstall(apkPath)) {
                    List<ResolveInfo> matches = findActivitiesForPackage(context, packageName);
                    if ((matches!=null) && (matches.size()>0)) {
                        ResolveInfo resolveInfo = matches.get(0);
                        ActivityInfo activityInfo = resolveInfo.activityInfo;
                        startApk(activityInfo.packageName, activityInfo.name);
                    }
                }
            };
        }.start();

    }

    public static String getUninstallApkPackageName(Context context, String apkPath) {
        String packageName = null;
        if (apkPath == null) {
            return packageName;
        }

        PackageManager pm = context.getPackageManager();
        PackageInfo info = pm.getPackageArchiveInfo(apkPath,
                PackageManager.GET_ACTIVITIES);
        if (info == null) {
            return packageName;
        }

        packageName = info.packageName;
        return packageName;
    }

    public static List<ResolveInfo> findActivitiesForPackage(Context context, String packageName) {
        final PackageManager pm = context.getPackageManager();

        final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        mainIntent.setPackage(packageName);

        final List<ResolveInfo> apps = pm.queryIntentActivities(mainIntent, 0);
        return apps != null ? apps : new ArrayList<ResolveInfo>();
    }

    public static boolean silentInstall(String apkPath) {
        String cmd1 = "chmod 777 " + apkPath + " \n";
        String cmd2 = "LD_LIBRARY_PATH=/vendor/lib:/system/lib pm install -r " + apkPath + " \n";
        return execWithSID(cmd1, cmd2);
    }

    private static boolean execWithSID(String... args) {
        boolean isSuccess = false;
        Process process = null;
        OutputStream out = null;
        try {
            process = Runtime.getRuntime().exec("su");
            out = process.getOutputStream();
            DataOutputStream dataOutputStream = new DataOutputStream(out);

            for (String tmp : args) {
                dataOutputStream.writeBytes(tmp);
            }

            dataOutputStream.flush(); // 提交命令
            dataOutputStream.close(); // 关闭流操作
            out.close();

            isSuccess = waitForProcess(process);
        } catch (IOException e) {
            e.printStackTrace();
        }

        return isSuccess;
    }

    public static boolean startApk(String packageName, String activityName) {
        boolean isSuccess = false;

        String cmd = "am start -n " + packageName + "/" + activityName + " \n";
        try {
            Process process = Runtime.getRuntime().exec(cmd);

            isSuccess = waitForProcess(process);
        } catch (IOException e) {
            NLog.i(TAG, e.getMessage());
            e.printStackTrace();
        }
        return isSuccess;
    }

    private static boolean waitForProcess(Process p) {
        boolean isSuccess = false;
        int returnCode;
        try {
            returnCode = p.waitFor();
            switch (returnCode) {
            case 0:
                isSuccess = true;
                break;

            case 1:
                break;

            default:
                break;
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        return isSuccess;
    }
}

 

       如果要使用，还需以下步骤：

1、在AndroidManifest.xml文件里添加如下权限：

<uses-permission android:name="android.permission.INSTALL_PACKAGES" />

2、进行系统签名。命令如下：

java -jar signapk.jar platform.x509.pem platform.pk8    XXX.apk    Signed_XXX.apk

       好了，现在大功告成！！！