android - 处理没有任何java文件的布局资源文件的点击

Question

我正在使用 google places api json 在 ListView 中检索附近的酒店，我已经成功地做到了，但我也想点击 ListView itms 中的按钮转到谷歌地图。作为 ListView 项目从没有任何 java 代码的布局资源文件中显示，我应该如何处理该布局资源文件中按钮的 onclick 事件？我试图单独创建一个 Activity 来处理该布局资源文件的事件，但它不起作用，它显示->

而我的布局资源文件是->

  <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">


    <LinearLayout

        android:padding="10dp"
        android:id="@+id/linlayout"
        android:layout_margin="5dp"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:orientation="vertical"
        >
       <ImageView
           android:id="@+id/map"
           android:src="@drawable/map"
           android:layout_width="45dp"
           android:layout_height="45dp"
           android:layout_gravity="right"
           />
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Name : "
                android:textSize="20sp"/>
            <TextView
                android:layout_marginLeft="10dp"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="value"
                android:textSize="20sp"
                android:id="@+id/nm"/>
        </LinearLayout>
    </LinearLayout>

和onclick habdler java代码是->

public class ListItem extends AppCompatActivity {
    Double lat=22.2254,lang=53.2354;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.list_item);

        LayoutInflater layoutInflater=(LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
        final  View vw=layoutInflater.inflate(R.layout.list_item,null);
        final Context context=vw.getContext();

    ImageView imgv=(ImageView)findViewById(R.id.map);
        imgv.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View view) {
                Log.i("ListItem","This Onclick worked ok");
                Intent intent=new Intent(context,MapView.class);
                intent.putExtra("lat",lat);
                intent.putExtra("lang",lang);
                startActivity(intent);
            }
        });
    }

}

它不工作..请帮我找到一种方法，这样如果我单击 ID 为“map”的 ImageView ，它就会带我去另一个 Activity !!

这是 ListView 适配器->

public class hotelAdapter extends ArrayAdapter<Hotels> {
public hotelAdapter(@NonNull Context context, ArrayList<Hotels> hotelsList) {
    super(context,0,hotelsList);
}

@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
    Hotels hotels=getItem(position);
    Context context;

    if(convertView==null){
        convertView= LayoutInflater.from(getContext()).inflate(R.layout.list_item,parent,false);

    }

//    context=convertView.getContext();

    TextView namevw=convertView.findViewById(R.id.nm);
    TextView rtingvw=convertView.findViewById(R.id.rtng);
    TextView adrsvw=convertView.findViewById(R.id.adrs);

    namevw.setText(hotels.getName());
    rtingvw.setText(hotels.getRating());
    adrsvw.setText(hotels.getVicinity());

    return convertView;
    // return super.getView(position, convertView, parent);
}
}

和MainActivity.java的OnCreate->

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    listView=(ListView)findViewById(R.id.lvw);

    Intent intent=getIntent();



    LayoutInflater layoutInflater=(LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
    final  View vw=layoutInflater.inflate(R.layout.list_item,null);
    ImageView imgv=(ImageView) vw.findViewById(R.id.map);

    imgv.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Log.i("ListItem","This Onclick worked ok");
            Toast.makeText(getApplicationContext(),"tHIS WORKED YEAH!",Toast.LENGTH_SHORT).show();
        }
    });

}

Answer 1

你好，你可以用这样简单的方法解决你的问题..

主 Activity

    hotelAdapter hotel;
    ArrayList<Hotels> hotelsList;
    ListView  listView;
     @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        hotelsList=new ArrayList<>();
        listView=(ListView)findViewById(R.id.lvw);
         hotel = new hotelAdapter(MainActivity.this, hotelsList);
         listView.setAdapter(hotel);

    }

适配器类

      public class hotelAdapter extends ArrayAdapter<Hotels> {

        Double lat = 22.2254, lang = 53.2354;
        Context context=null;

        public hotelAdapter(Context context, ArrayList<Hotels> hotelsList) {
            super(context, 0, hotelsList);
        }

        @NonNull
        @Override
        public View getView(int position, View convertView, @NonNull ViewGroup parent) {
            Hotels hotels = getItem(position);

            if (convertView == null) {
                convertView = LayoutInflater.from(getContext()).inflate(R.layout.list_item, parent, false);
            }

    context=convertView.getContext();   //ReEdited to make the code work
            TextView namevw = (TextView) convertView.findViewById(R.id.nm);
            TextView rtingvw =(TextView)  convertView.findViewById(R.id.rtng);
            TextView adrsvw =(TextView) convertView.findViewById(R.id.adrs);
            ImageView map = (ImageView) convertView.findViewById(R.id.map); // edited
            namevw.setText(hotels.getName());
            rtingvw.setText(hotels.getRating());
            adrsvw.setText(hotels.getVicinity());

            map.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent intent = new Intent(context, MapView.class);
                    intent.putExtra("lat", lat);
                    intent.putExtra("lang", lang);
                    context.startActivity(intent);
                }
            });
            return convertView;
            // return super.getView(position, convertView, parent);
        }
    }