Question

这是我的menu_fragment.xml

 <?xml version="1.0" encoding="utf-8"?>
        <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:orientation="vertical" android:layout_width="match_parent"
            android:layout_height="match_parent">
            <ImageView
                android:id="@+id/imageView3"
                android:layout_width="match_parent"
                android:layout_height="118dp"
                app:srcCompat="@drawable/three" />
 <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="MENU"
        android:textColor="@android:color/holo_red_dark"
        android:textSize="22sp"
        android:textStyle="bold|italic" />
           <ListView
               android:id="@+id/listView"
               android:layout_width="match_parent"
               android:layout_height="wrap_content"
               android:textAlignment="center"
               android:layout_weight="2"
               />
           <TextView
               android:id="@+id/textView"
               android:layout_width="match_parent"
               android:layout_height="wrap_content"
               android:textSize="22sp"
               android:textColor="@android:color/holo_red_dark" />
        </LinearLayout>

这是我的MenuFragment.java

package com.maharajarasoiandevents.maharajarasoiandevents.mFragments;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.maharajarasoiandevents.maharajarasoiandevents.ChaatActivity;
import com.maharajarasoiandevents.maharajarasoiandevents.ExoticSpecialityActivity;
import com.maharajarasoiandevents.maharajarasoiandevents.R;
import com.maharajarasoiandevents.maharajarasoiandevents.SaladsActivity;
import com.maharajarasoiandevents.maharajarasoiandevents.SoupActivity;
import com.maharajarasoiandevents.maharajarasoiandevents.StarterActivity;
import com.maharajarasoiandevents.maharajarasoiandevents.WelcomeDrinkActivity;


public class MenuFragment extends Fragment {

    ListView listView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        final View rootView=inflater.inflate(R.layout.menu_fragment,container,false);

        listView = (ListView) rootView.findViewById(R.id.listView);
        final String[] values = new String[]{"Welcome Drink","Moving Starter","Soup","Salads","Chaat","Exotic Speciality"};
        ArrayAdapter<String> adapter;
        adapter = new ArrayAdapter<String>(getActivity(), R.layout.menu_fragment, R.id.textView, values);
        listView.setAdapter(adapter);



        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int pos, long id) {
                if (pos == 0) {
                    Intent myIntent = new Intent(rootView.getContext(), WelcomeDrinkActivity.class);
                    startActivityForResult(myIntent,0);
                }
                if(pos==1){
                    Intent myIntent=new Intent(rootView.getContext(), StarterActivity.class);
                    startActivityForResult(myIntent,1);
                }
                if(pos==2){
                    Intent myIntent=new Intent(rootView.getContext(), SoupActivity.class);
                    startActivityForResult(myIntent,2);
                }
                if(pos==3){
                    Intent myIntent=new Intent(rootView.getContext(), SaladsActivity.class);
                    startActivityForResult(myIntent,1);
                }
                if(pos==4){
                    Intent myIntent=new Intent(rootView.getContext(), ChaatActivity.class);
                    startActivityForResult(myIntent,2);
                }
                if(pos==5){
                    Intent myIntent=new Intent(rootView.getContext(), ExoticSpecialityActivity.class);
                    startActivityForResult(myIntent,1);
                }

        }
    });
        return rootView;
    }
}

我只想要1个图像和1个textview，我在那个页面顶部写了MENU作为文本....甚至我在menu_fragment.xml中只拍了一张图像和1个textview ...但它显示了多个图像n textviews ...为什么这样？表示listview再次重复n但我不想每次都显示图像n textview ..就像listview ..我正在编辑我的代码..plz检查它:)）

Answer 1

试试这个：

ListView listView;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
}

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.menu_fragment, container, false);
    listView = (ListView) rootView.findViewById(R.id.listView);
    final String[] values = new String[]{"starter", "juices", "roties"};
    // edited
    MyArrayAdapter adapter;
    // edited ,add size and color parameters
    adapter = new MyArrayAdapter(getActivity(), R.layout.menu_fragment, R.id.textView, values,Color.RED, 16f);
    listView.setAdapter(adapter);

    return rootView;
}

<强>被修改

添加MyArrayAdapter

public class MyArrayAdapter extends ArrayAdapter {

    private int color;
    private float size;

    // edited ,add size and color parameters
    public MyArrayAdapter(Context context, int layoutId, int resource, Object[] objects, int color, float size) {
        super(context, layoutId, resource, objects);
        this.color = color;
        this.size = size;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        String str = (String) getItem(position);
        if (convertView == null) {
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.menu_fragment, parent, false);
        }
        TextView tv = (TextView) convertView.findViewById(R.id.textView);
        tv.setText(str);
        // edited , modified setTextSize and setTextColor
        tv.setTextSize(size);
        tv.setTextColor(color);
        return convertView;
    }
}

希望能帮到你。

Answer 2

ArrayAdapter类的构造函数将Context作为第一个参数，而不是Fragment。而不是this使用getActivity方法调用。

adapter = new ArrayAdapter<String>(getActivity(), R.layout.menu_fragment,R.id.textView,values);

我如何为String []值设置fontsize ..我可以设置该字符串

2 个答案: