从非活动类开始一个新的活动 [英] Start a new Activity from non Activity class

问题描述

我想在实现 DialogListener 的非 Activity 类中启动一个新活动，以下是我的代码:

I want to start a new activity in non-Activity class that implements a DialogListener following is my code:

public class FacebookLoginDialog implements DialogListener {
  @Override
  public void onComplete(Bundle values) {
    HomeActivity.showInLog(values.toString());

    Intent i1 = new Intent (this, SearchActivity.class);
    startActivity(i1);
  }

  @Override
  public void onFacebookError(FacebookError e) {
    // TODO Auto-generated method stub
  }

  @Override
  public void onError(DialogError e) {
    // TODO Auto-generated method stub
  }

  @Override
  public void onCancel() {
    // TODO Auto-generated method stub
  }
}

我无法在 onComplete 方法中使用 Intent 启动新活动，请帮忙.

I can't start the new activity using intent in onComplete method, please help.

谢谢

推荐答案

这不起作用，因为您需要一个 Context 才能开始新活动.您可以将类重新组织成这样:

This doesn't work because you need a Context in order to start a new activity. You can reorganize your class into something like this:

public class FacebookLoginDialog implements DialogListener {
  private final Context context;

  public FacebookLoginDialog(Context context) {
    this.context = context;
  }

  @Override
  public void onComplete(Bundle values) {
    HomeActivity.showInLog(values.toString());

    Intent i1 = new Intent (context, SearchActivity.class);
    context.startActivity(i1);
  }

  //Other methods...
}

然后就可以了.

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