在片段中显示TextView

时间:2017-04-16 12:23:43

标签: java android

我尝试在检查完所有rb后立即在Fragment41显示文本。如何在Fragment41中显示此文字?我试过几种方法,但我对这种实现感到困惑。我知道方法getIntent().这里错了,但我不知道该改变它的方法。请帮助解决这一切。

我的Fragment41

    package make.appaplication;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class Fragment41 extends Fragment {


    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_41, container, false);

        TextView textViewDisplayResult = (TextView) getView().findViewById(R.id.text_view_display_result);

        textViewDisplayResult.setText(getIntent().getBooleanExtra("KEY_ANSWER", false)?R.string.Good_answer:R.string.Wrong_answer);
    }
}

Fragment41

中的FragmentList MainActivity
fragmentList.add(new Fragment41());

以下是checkButton

的代码
buttonCheckAnswer.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (checkAnswers())
                intent.putExtra("Key Answer", true);

            else
                intent.putExtra("Key Answer", false);
            startActivity(intent);
        }
    });

还有一个问题

我有两个strings"答案很好"和#34;错误答案"它们的代码是

buttonCheckAnswer.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (checkAnswers())
                intent.putExtra("Key Answer", true);

            else
                intent.putExtra("Key Answer", false);
            startActivity(intent);
        }
    });

如何添加上面和下面的代码,还有一个声明string"您还没有检查过所有答案"?

 textViewDisplayResult.setText(getActivity().getIntent().getBooleanExtra("Key Answer", false)?R.string.Good_answer:R.string.Wrong_answer);

2 个答案:

答案 0 :(得分:0)

对来自"Key Answer"的{​​{1}}和put额外数据使用相同的KEY get

更新Intent,如下所示

Fragment41

<强>更新

使用package make.appaplication; import android.support.v4.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; public class Fragment41 extends Fragment { public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment View view = inflater.inflate(R.layout.fragment_41, container, false); TextView textViewDisplayResult = (TextView) view.findViewById(R.id.text_view_display_result); boolean isAnswered = getIntent().getBooleanExtra("is_answered"); if (isAnswered) textViewDisplayResult.setText(getIntent().getBooleanExtra("Key Answer", false)?R.string.Good_answer:R.string.Wrong_answer); else textViewDisplayResult.setText("You haven't checked all answers"); return view; } 变量boolean检查天气用户是否回答。使用KEY isAnswered将此值传递给片段。

is_answered

答案 1 :(得分:0)

您需要使用getActivity().getIntent().get...而不是仅调用getIntent()。所以片段中的整个代码是:

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view =  inflater.inflate(R.layout.fragment_41, container, false);

    TextView textViewDisplayResult = (TextView) view.findViewById(R.id.text_view_display_result);
    textViewDisplayResult.setText(getActivity().getIntent().getBooleanExtra("Key Answer", false)?R.string.Good_answer:R.string.Wrong_answer);

    return view;
}

我想我已在你上一篇文章中回答过。

当然,我认为你做到了(如果你没有请先阅读文档https://developer.android.com/guide/components/fragments.html#Adding),你需要将你的片段添加到Activity:

getFragmentManager().beginTransaction().add(R.id.fragmentHolder, fragment_41_instance).addToBackStack(null).commit(); 

另一个问题

buttonCheckAnswer.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        if (!allAnswersChecked())
            intent.putExtra("Key Answer", 1);
        else if (checkAnswers()) 
            intent.putExtra("Key Answer", 2);
        else
            intent.putExtra("Key Answer", 3);
        startActivity(intent);
    }
});

然后:

int result = getActivity().getIntent().getIntExtra("Key Answer", 1);
textViewDisplayResult.setText(result == 1 ? R.string.text_not_checked : 
    result == 2 ? R.string.Good_answer : R.string.Wrong_answer);