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Java getApplicationContext()上出现错误_Java_Android_Android Fragments - Fatal编程技术网

Java getApplicationContext()上出现错误

Java getApplicationContext()上出现错误,java,android,android-fragments,Java,Android,Android Fragments,我在getApplicationContext上的Public View onCreateView上有一个错误,它在我的HomeFragment上似乎不起作用,但当我在MainActivity上尝试此操作时,它起作用了。有人遇到过这种情况吗 提前谢谢 这是我的密码: package com.thesis.artificialintelligence; import android.app.Activity; import android.os.Bundle; import a

我在getApplicationContext上的Public View onCreateView上有一个错误,它在我的HomeFragment上似乎不起作用,但当我在MainActivity上尝试此操作时,它起作用了。有人遇到过这种情况吗

提前谢谢
这是我的密码:

package com.thesis.artificialintelligence;


import android.app.Activity;  
import android.os.Bundle;      
import android.speech.tts.TextToSpeech;  
import android.support.v4.app.Fragment;   
import android.view.LayoutInflater;   
import android.view.View;  
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.Locale;



public class HomeFragment extends Fragment {

private TextView resultTEXT;
private TextView resultTEXT2;
TextToSpeech t1;
private String package_calculator = "com.android.calculator2";
private String class_calculator ="com.android.calculator2.Calculator";
private String package_camera = "com.android.camera";
private String class_camera ="com.android.camera.Camera";
private String package_contacts = "com.android.contacts";
private String class_contacts = "com.android.contacts.Contacts";

@Override
public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);



}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_home, container, false);
    // Inflate the layout for this fragment
    rootView.findViewById(R.id.TVresult);
    rootView.findViewById(R.id.TVresult2);

    t1 = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() // There`s an Error here at getApplicationContext()
    {
        @Override
        public void onInit(int status)
        {
            if(status != TextToSpeech.ERROR)
            {
                t1.setLanguage(Locale.UK);
            }
        }
    });




    return rootView;


}



@Override
public void onAttach(Activity activity) {

    super.onAttach(activity);

}

@Override
public void onDetach()
{

    super.onDetach();

}
}

片段没有
getApplicationContext()
方法

TextToSpeech
只需要一个上下文,这样您就可以将其替换为
getActivity()


如果您确实希望应用程序上下文执行
getActivity().getApplicationContext()
如果您使用的是片段,请将
getApplicationContext()
替换为
getActivity()
getContext()
亲爱的,您可以使用

getActivity().getApplicationContext();