最安全方式

    public static void startApp(Context context, String packageName) {
        try {
            PackageManager packageManager = context.getApplicationContext().getPackageManager();
            Intent intent = packageManager.getLaunchIntentForPackage(packageName);
            if (intent == null) {
                LogUtils.d(packageName + "，應用不存在");
            } else {
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.getApplicationContext().startActivity(intent);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 

另外兩種方式，如果第三方app做個引數校驗，可能導致啟動失敗

Intent intent=new Intent();  
    //包名 包名+類名（全路徑）  
    intent.setClassName("com.linxcool", "com.linxcool.PlaneActivity");  
    startActivity(intent);  

    Intent intent = new Intent();  
    ComponentName comp = new ComponentName("com.linxcool","com.linxcool.PlaneActivity");  
    intent.setComponent(comp);  
    intent.setAction("android.intent.action.MAIN");  
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  
    startActivity(intent);