Question

问题：

简单应用程序应该在列表视图中显示布局，布局包含如下数据：

ImageView 1 ---文本视图1 /（下方）文本视图2 ---图像视图2

问题是图像视图2在某些设备中不可见，如Galaxy S4和Grand Duos

工作：

enter image description here

不工作：

enter image description here

代码：

项目结构：

enter image description here

MainActivity Code：

package com.example.screenfix;

import java.util.ArrayList;
import java.util.HashMap;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.ListView;

public class MainActivity extends Activity {

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

        ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();

        HashMap<String, String> map = new HashMap<String, String>();
        map.put("App_Name", "Test Data");
        map.put("App_Desc", "Test Description");
        map.put("Price", "free");
        map.put("image_url","importicon");
        songsList.add(map);

        BinderData bindingData = new BinderData(this,songsList);
        ListView list = (ListView) findViewById(R.id.listView1);

        list.setAdapter(bindingData);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

AdapterCode：

package com.example.screenfix;

import java.util.HashMap;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class BinderData extends BaseAdapter {

    // XML node keys
    static final String KEY_TAG = "weatherdata"; // parent node
    static final String KEY_ID = "id";
    static final String KEY_CITY = "city";
    static final String KEY_TEMP_C = "tempc";
    static final String KEY_TEMP_F = "tempf";
    static final String KEY_CONDN = "condition";
    static final String KEY_SPEED = "windspeed";
    static final String KEY_ICON = "icon";

    LayoutInflater inflater;
    ImageView thumb_image;
    List<HashMap<String,String>> weatherDataCollection;
    ViewHolder holder;
    public BinderData() {
        // TODO Auto-generated constructor stub
    }

    public BinderData(Activity act, List<HashMap<String,String>> map) {

        this.weatherDataCollection = map;

        inflater = (LayoutInflater) act
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }


    public int getCount() {
        // TODO Auto-generated method stub
//      return idlist.size();
        return weatherDataCollection.size();
    }

    public Object getItem(int arg0) {
        // TODO Auto-generated method stub
        return arg0;
    }

    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }

    public View getView(int position, View convertView, ViewGroup parent) {

        View vi=convertView;
        if(convertView==null){

          vi = inflater.inflate(R.layout.rowdata, null);
          holder = new ViewHolder();

          holder.tvCity = (TextView)vi.findViewById(R.id.textView1); // city name
          holder.tvWeather = (TextView)vi.findViewById(R.id.textView2); // city weather overview
          holder.tvTemperature =  (ImageView)vi.findViewById(R.id.imageView2); // city temperature
          holder.tvWeatherImage =(ImageView)vi.findViewById(R.id.imageView1); // thumb image

          vi.setTag(holder);
        }
        else{

            holder = (ViewHolder)vi.getTag();
        }

          // Setting all values in listview

          holder.tvCity.setText(weatherDataCollection.get(position).get("App_Name"));
          holder.tvWeather.setText(weatherDataCollection.get(position).get("App_Desc"));
          String uri = "";
          if(weatherDataCollection.get(position).get("Price").equalsIgnoreCase("pro"))
          {
              uri = "drawable/label";

          }else{
              uri = "drawable/free";
          }
          int imageResource = vi.getContext().getApplicationContext().getResources().getIdentifier(uri, null, vi.getContext().getApplicationContext().getPackageName());
          Drawable image = vi.getContext().getResources().getDrawable(imageResource);
          holder.tvTemperature.setImageDrawable(image);
          //holder.tvTemperature.setText(weatherDataCollection.get(position).get("Price"));

          //Setting an image
          String uri2 = "drawable/"+ weatherDataCollection.get(position).get("image_url");
          int imageResource2 = vi.getContext().getApplicationContext().getResources().getIdentifier(uri2, null, vi.getContext().getApplicationContext().getPackageName());
          Drawable image2 = vi.getContext().getResources().getDrawable(imageResource2);
          holder.tvWeatherImage.setImageDrawable(image2);

          return vi;
    }

    /*
     * 
     * */
    static class ViewHolder{

        TextView tvCity;
        ImageView tvTemperature;
        TextView tvWeather;
        ImageView tvWeatherImage;
    }

}

MainActivity xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerHorizontal="true" >

    </ListView>

</RelativeLayout>

ListRowData：

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

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="0dp"
        android:layout_height="44dp"
        android:layout_weight="0.20"
        android:scaleType="fitStart"
        android:src="@drawable/importicon" />

    <LinearLayout
        android:layout_width="0dp"
        android:layout_weight="0.70"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"

            android:layout_height="wrap_content"
            android:text="TextView 1" />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="TextView 2" />
    </LinearLayout>

    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="0dp"
        android:layout_height="50dp"
        android:layout_weight="0.10"

        android:src="@drawable/free" />

</LinearLayout>

感谢任何帮助......

Answer 1

应用android:layout_width="match_parent"并将android:layout_weight=""（如下所示）更改为rowdata.xml中的ImageView和内部LinearLayout

这是代码

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

  <ImageView
      android:id="@+id/imageView1"
      android:layout_width="match_parent"
      android:layout_height="44dp"
      android:layout_weight="2"
      android:scaleType="fitStart"
      android:src="@drawable/ic_launcher" />

  <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:orientation="vertical" >

     <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView 1" />

     <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView 2" />
  </LinearLayout>

  <ImageView
     android:id="@+id/imageView2"
     android:layout_width="match_parent"
     android:layout_height="50dp"
     android:layout_weight="2"
     android:src="@drawable/ic_launcher" />

</LinearLayout>

Answer 2

求助：

问题在于最右边的图标，它具有非常高的分辨率，只是降低了分辨率并替换了文件并且工作正常。

感谢每个人的时间..

列表视图仅在高分辨率设备中的最右侧角上不显示图像

2 个答案: