Android 从非活动类开始一个新的活动
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原文地址: http://stackoverflow.com/questions/12664463/
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Start a new Activity from non Activity class
提问by Nadeem
I want to start a new activity in non-Activity class that implements a DialogListenerfollowing is my code:
我想在非 Activity 类中启动一个新活动，该活动实现DialogListener以下是我的代码：
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
}
}
I can't start the new activity using intent in onCompletemethod, please help.
我无法使用onComplete方法中的意图启动新活动，请帮助。
Thanks
谢谢
回答by Malcolm
This doesn't work because you need a Contextin order to start a new activity. You can reorganize your class into something like this:
这不起作用，因为您需要 aContext才能开始新活动。您可以将类重新组织成这样：
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...
}
Then it will work.
然后它会起作用。
回答by Peter Moskala
Pass context as constructor parameter and then try this
将上下文作为构造函数参数传递，然后试试这个
Intent i = new Intent(this, SearchActivity.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
回答by passionatedevops
use starActivity from non-activity class:
使用非活动类中的 starActivity：
Intent intent = new Intent(android.content.Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_TEXT, "YOUR STRING");
intent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Share via...");
context.startActivity(Intent.createChooser(intent, "Share"));
