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Question

我正试图将SlideLock添加到我的应用程序中，以获得我在SlideMe上安装的版本。由于某些原因，我在mainActivityInstance上遇到了一个错误，我不知道为什么。有什么不对吗？谢谢。

public void onCreate(束冰柱){super.onCreate(冰柱)；setContentView(R.layout.home)；

    com.slideme.slidelock.License myLicense = 
        new com.slideme.slidelock.License("My first license", 
                                          "4839206850342",
                                          mainActivityInstance);
    // There are other constructors available also. 
    // This one is just the most comfortable.

    try{
        /* 
        *  You can store the fetched data in a persistent storage and retrieve 
        *  it from there on the next application startup, just in case you 
        *  want to save the end-user's networking traffic and reduce startup 
        *  delays. We strongly recommend you to refresh the license from 
        *  time to time, just in case the end-user claims a refund, or any 
        *  other corner case scenario
        */
        myLicense.digest(myLicense.fetch());
    } catch(IOException ioe){
        // license couldn't initialize. Handle this
    }

    Rights someRights = myLicense.getFullRights();
    // Works even if you already reserved the SlideLock Key in the past.

    if(someRights != null){
        // you have granted rights.
    } else {
        // You don't have any rights for the feature in cause. Try
        // some features. (Currently not supporting multiple 'features')
    }

Answer 1

我没有看到您在任何地方声明mainActivityInstance变量。如果在Activity#onCreate(Bundle冰柱)方法中使用此代码，则可以通过直接传递活动实例引用来实例化SlideLock2：

        new com.slideme.slidelock.License("My first license", 
                                      "4839206850342",
                                      this);

如果你有进一步的麻烦请告诉我。

谢谢你，-SlideME SlideLock团队