Android 列表视图仅在高分辨率设备的最右角不显示图像
问题: 简单的应用程序应该在listview中显示布局,布局包含如下数据: 图像视图1---文本视图1/(下图)文本视图2---图像视图2 问题是图像视图2在Galaxy S4和Grand Duos等设备中不可见 工作: 不工作: 代码: 项目结构: 主要活动代码:Android 列表视图仅在高分辨率设备的最右角不显示图像,android,android-layout,listview,android-listview,galaxy,Android,Android Layout,Listview,Android Listview,Galaxy,问题: 简单的应用程序应该在listview中显示布局,布局包含如下数据: 图像视图1---文本视图1/(下图)文本视图2---图像视图2 问题是图像视图2在Galaxy S4和Grand Duos等设备中不可见 工作: 不工作: 代码: 项目结构: 主要活动代码: package com.example.screenfix; import java.util.ArrayList; import java.util.HashMap; import android.app.Activit
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;
}
}
package com.example.screenfix;
导入java.util.ArrayList;
导入java.util.HashMap;
导入android.app.Activity;
导入android.os.Bundle;
导入android.view.Menu;
导入android.widget.ListView;
公共类MainActivity扩展了活动{
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList songsList=新的ArrayList();
HashMap=newHashMap();
地图放置(“应用程序名称”、“测试数据”);
地图放置(“应用描述”、“测试描述”);
地图出售(“价格”、“免费”);
地图放置(“图像url”、“导入”);
歌曲列表。添加(地图);
BinderData bindingData=新的BinderData(这是songsList);
ListView列表=(ListView)findViewById(R.id.listView1);
list.setAdapter(bindingData);
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
//为菜单充气;这会将项目添加到操作栏(如果存在)。
getMenuInflater().充气(R.menu.main,menu);
返回true;
}
}
适配器代码:
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;
}
}
package com.example.screenfix;
导入java.util.HashMap;
导入java.util.List;
导入android.app.Activity;
导入android.content.Context;
导入android.graphics.drawable.drawable;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.view.ViewGroup;
导入android.widget.BaseAdapter;
导入android.widget.ImageView;
导入android.widget.TextView;
公共类BinderData扩展BaseAdapter{
//XML节点密钥
静态最终字符串键\u TAG=“weatherdata”//父节点
静态最终字符串键\u ID=“ID”;
静态最终字符串键\u CITY=“CITY”;
静态最终字符串键_TEMP_C=“tempc”;
静态最终字符串键\u TEMP\u F=“tempf”;
静态最终字符串键\u CONDN=“条件”;
静态最终字符串键\u SPEED=“windspeed”;
静态最终字符串键\u ICON=“ICON”;
充气机;
ImageView拇指图像;
数据收集清单;
视窗座;
公共BinderData(){
//TODO自动生成的构造函数存根
}
公共BinderData(活动法案、列表地图){
this.weatherDataCollection=map;
充气机=(充气机)法
.getSystemService(上下文布局\充气机\服务);
}
public int getCount(){
//TODO自动生成的方法存根
//返回idlist.size();
返回weatherDataCollection.size();
}
公共对象getItem(int arg0){
//TODO自动生成的方法存根
返回arg0;
}
公共长getItemId(int位置){
//TODO自动生成的方法存根
返回0;
}
公共视图getView(int位置、视图转换视图、视图组父视图){
视图vi=转换视图;
if(convertView==null){
vi=充气机充气(R.layout.rowdata,null);
holder=新的ViewHolder();
holder.tvCity=(TextView)vi.findViewById(R.id.textView1);//城市名称
holder.tvWeather=(TextView)vi.findViewById(R.id.textView2);//城市天气概览
holder.tvTemperature=(ImageView)vi.findViewById(R.id.imageView2);//城市温度
holder.tvWeatherImage=(ImageView)vi.findViewById(R.id.imageView1);//拇指图像
vi.setTag(支架);
}
否则{
holder=(ViewHolder)vi.getTag();
}
//在listview中设置所有值
holder.tvCity.setText(weatherDataCollection.get(position.get)(“应用程序名称”);
holder.tvWeather.setText(weatherDataCollection.get(position.get)(“App_Desc”));
字符串uri=“”;
if(weatherDataCollection.get(position.get(“Price”).equalsIgnoreCase(“pro”))
{
uri=“可绘制/标签”;
}否则{
uri=“可提取/免费”;
}
int-imageResource=vi.getContext().getApplicationContext().getResources().getIdentifier(uri,null,vi.getContext().getApplicationContext().getPackageName());
可绘制图像=vi.getContext().getResources().getDrawable(imageResource);
支架.tVTempture.setImageDrawable(图像);
//holder.tvTemperature.setText(weatherDataCollection.get(position.get(“Price”));
//设置图像
字符串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);
支架.tvWeatherImage.setImageDrawable(图像2);
返回vi;
}
/*
*
* */
静态类视窗夹{
TextView电视城;
图像视图温度;
TextView电视天气;
ImageView电视天气图像;
}
}
主要活动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>
非常感谢您的帮助……在rowdata.xml中应用
android:layout\u width=“match\u parent”
并将android:layout\u weight=“”
(如下所示)更改为ImageView和inner 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>
已解决:
问题在于最右边的图标,它的分辨率非常高,只是降低了分辨率并替换了t