PackageManager packageManager = this.getPackageManager();
    Intent intent = packageManager.getLaunchIntentForPackage("項(xiàng)目包名");
    startActivity(intent);

    /**
     * @param context     上下文
     * @param packageName 包名
     */
    public void skipOtherApp(Context context, String packageName) {
        PackageManager packageManager = context.getPackageManager();
        Intent intent = packageManager.getLaunchIntentForPackage(packageName);
        startActivity(intent);
    }

    Intent intent = new Intent();
    //這里跳轉(zhuǎn)的是淘寶的啟動(dòng)頁(yè)
    ComponentName comp = new ComponentName("com.taobao.taobao", "com.taobao.tao.welcome.Welcome");
    intent.setComponent(comp);
    //為三方的activity新開(kāi)任務(wù)棧
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);

    /**
     * @param packageName   包名
     * @param activityClass 跳轉(zhuǎn)界面的activity
     */
    public void skipOtherAppActivity(String packageName, String activityClass) {
        Intent intent = new Intent();
        //ComponentName類主要是用來(lái)幫助打開(kāi)另一個(gè)應(yīng)用的Activity或者Service等，通過(guò)Intent.setComponent方法實(shí)現(xiàn)
        ComponentName comp = new ComponentName(packageName, activityClass);
        intent.setComponent(comp);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);
    }

    /**
     * 通過(guò)PackageManager獲取手機(jī)內(nèi)所有app的包名和啟動(dòng)頁(yè)（首個(gè)啟動(dòng)Activity的類名）
     * 可根據(jù)自己業(yè)務(wù)需求封裝方法的返回體，可以是單app信息，也可以是appList
     */
    public void getAllApp(Context context) {
        Intent intent = new Intent(Intent.ACTION_MAIN, null);
        intent.addCategory(Intent.CATEGORY_LAUNCHER);
        PackageManager packageManager = context.getPackageManager();
        List<ResolveInfo> appsInfo = packageManager.queryIntentActivities(intent, 0);
        Collections.sort(appsInfo, new ResolveInfo.DisplayNameComparator(packageManager));
        for (ResolveInfo info : appsInfo) {
            String pkg = info.activityInfo.packageName;
            String cls = info.activityInfo.name;
            Log.e("app_info", "pkg:" + pkg + " —— cls:" + cls);
        }
    }

    /**
     * 獲取手機(jī)app列表
     */
    public List<ResolveInfo> getAllAppList(Context context) {
        Intent intent = new Intent(Intent.ACTION_MAIN, null);
        intent.addCategory(Intent.CATEGORY_LAUNCHER);
        PackageManager packageManager = context.getPackageManager();
        List<ResolveInfo> appsInfo = packageManager.queryIntentActivities(intent, 0);
        Collections.sort(appsInfo, new ResolveInfo.DisplayNameComparator(packageManager));
        return appsInfo;
    }