如何在Android中将文本和图像(图像URL)设置为Gridview
如何在Android中将文本和图像(图像URL)设置为Gridview,并且图像大小应固定为所有图像如何在Android中将文本和图像(图像URL)设置为Gridview,android,Android,如何在Android中将文本和图像(图像URL)设置为Gridview,并且图像大小应固定为所有图像 注意:我正在从webservice收集这些数据(图像URL和文本)例如,您必须创建自己的布局 <RelativeLayout android:id="@+id/relGrid" android:layout_width="fill_parent" android:layout_height="wrap_content" a
注意:我正在从webservice收集这些数据(图像URL和文本)例如,您必须创建自己的布局
<RelativeLayout
android:id="@+id/relGrid"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp" >
<GridView
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:columnWidth="90dp"
android:numColumns="3"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:listSelector="@null" />
</RelativeLayout>
为网格中的每个项目多做一个布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="120dp"
android:background="@drawable/background">
<ImageView
android:layout_width="wrap_content"
android:id="@+id/imgGrid"
android:layout_centerHorizontal="true"
android:layout_height="wrap_content"/>
<TextView
android:layout_below="@+id/imgGrid"
android:layout_centerInParent="true"
android:id="@+id/txtTitle"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:gravity="center"
android:text=""
android:textStyle="bold"
android:textSize="15dp"
android:textColor="@color/blue"/>
</RelativeLayout>
然后像这样使用gridView
setContentView(R.layout.main);
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(MainActivity.this,R.layout.grid_layout , imgArray, titleArray));
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
{
if(position == 0)
{
//your code
}
}
});
setContentView(R.layout.main);
GridView GridView=(GridView)findViewById(R.id.GridView);
setAdapter(新的ImageAdapter(MainActivity.this,R.layout.grid_layout,imgArray,titleArray));
setOnItemClickListener(新的OnItemClickListener(){
public void onItemClick(AdapterView父视图、视图v、整型位置、长id)
{
如果(位置==0)
{
//你的代码
}
}
});
ImageAdapter.java
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class ImageAdapter extends ArrayAdapter<Object>
{
String TAG = "ImageAdapter";
private int resource;
private Integer[] mImgGrid;
private String[] mTitleText;
public ImageAdapter(Context context, int resorce, Integer[] imgGrid,String[] titleText)
{
super(context, resorce, imgGrid);
Log.i(TAG," in set adapter lstRecipes "+ imgGrid.length );
this.resource = resorce;
this.mImgGrid = imgGrid;
this.mTitleText = titleText;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewHolder holder;
if (convertView == null)
{
LayoutInflater layoutInflater = LayoutInflater.from(getContext());
convertView = layoutInflater.inflate(resource, parent, false);
holder = new ViewHolder();
holder.txtTitle = (TextView)convertView.findViewById(R.id.txtTitle);
holder.imgGrid = (ImageView)convertView.findViewById(R.id.imgGrid);
convertView.setTag(holder);
}
else
{
holder=(ViewHolder)convertView.getTag();
}
try
{
holder.txtTitle.setText(mTitleText[position]);
holder.imgGrid.setImageResource(mImgGrid[position]);
}
catch (Exception e)
{
e.printStackTrace();
}
return convertView;
}
public static class ViewHolder
{
private TextView txtTitle;
private ImageView imgGrid;
}
}
导入android.content.Context;
导入android.util.Log;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.view.ViewGroup;
导入android.widget.ArrayAdapter;
导入android.widget.ImageView;
导入android.widget.TextView;
公共类ImageAdapter扩展了ArrayAdapter
{
String TAG=“ImageAdapter”;
私有int资源;
私有整数[]mImgGrid;
私有字符串[]mTitleText;
公共ImageAdapter(上下文上下文,int-resorce,整数[]imgGrid,字符串[]titleText)
{
super(上下文、资源、imgGrid);
Log.i(标记“内置适配器lstcipes”+imgGrid.length);
这个资源=资源;
this.mImgGrid=imgGrid;
this.mTitleText=titleText;
}
@凌驾
公共视图getView(int位置、视图转换视图、视图组父视图)
{
视窗座;
if(convertView==null)
{
LayoutInflater LayoutInflater=LayoutInflater.from(getContext());
convertView=LayoutFlater.inflate(资源、父项、false);
holder=新的ViewHolder();
holder.txtTitle=(TextView)convertView.findViewById(R.id.txtTitle);
holder.imgGrid=(ImageView)convertView.findViewById(R.id.imgGrid);
convertView.setTag(支架);
}
其他的
{
holder=(ViewHolder)convertView.getTag();
}
尝试
{
holder.txtitle.setText(mTitleText[位置]);
holder.imgGrid.setImageResource(mImgGrid[position]);
}
捕获(例外e)
{
e、 printStackTrace();
}
返回视图;
}
公共静态类视图持有者
{
私有文本视图txtTitle;
私有图像视图imgGrid;
}
}
如果您直接使用来自webservice的图像和文本,那么这没什么大不了的。您可以从webservice解析数据,并在ImageView和TextView中进行设置。例如,您必须创建自己的布局
<RelativeLayout
android:id="@+id/relGrid"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp" >
<GridView
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:columnWidth="90dp"
android:numColumns="3"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:listSelector="@null" />
</RelativeLayout>
为网格中的每个项目多做一个布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="120dp"
android:background="@drawable/background">
<ImageView
android:layout_width="wrap_content"
android:id="@+id/imgGrid"
android:layout_centerHorizontal="true"
android:layout_height="wrap_content"/>
<TextView
android:layout_below="@+id/imgGrid"
android:layout_centerInParent="true"
android:id="@+id/txtTitle"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:gravity="center"
android:text=""
android:textStyle="bold"
android:textSize="15dp"
android:textColor="@color/blue"/>
</RelativeLayout>
然后像这样使用gridView
setContentView(R.layout.main);
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(MainActivity.this,R.layout.grid_layout , imgArray, titleArray));
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
{
if(position == 0)
{
//your code
}
}
});
setContentView(R.layout.main);
GridView GridView=(GridView)findViewById(R.id.GridView);
setAdapter(新的ImageAdapter(MainActivity.this,R.layout.grid_layout,imgArray,titleArray));
setOnItemClickListener(新的OnItemClickListener(){
public void onItemClick(AdapterView父视图、视图v、整型位置、长id)
{
如果(位置==0)
{
//你的代码
}
}
});
ImageAdapter.java
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class ImageAdapter extends ArrayAdapter<Object>
{
String TAG = "ImageAdapter";
private int resource;
private Integer[] mImgGrid;
private String[] mTitleText;
public ImageAdapter(Context context, int resorce, Integer[] imgGrid,String[] titleText)
{
super(context, resorce, imgGrid);
Log.i(TAG," in set adapter lstRecipes "+ imgGrid.length );
this.resource = resorce;
this.mImgGrid = imgGrid;
this.mTitleText = titleText;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewHolder holder;
if (convertView == null)
{
LayoutInflater layoutInflater = LayoutInflater.from(getContext());
convertView = layoutInflater.inflate(resource, parent, false);
holder = new ViewHolder();
holder.txtTitle = (TextView)convertView.findViewById(R.id.txtTitle);
holder.imgGrid = (ImageView)convertView.findViewById(R.id.imgGrid);
convertView.setTag(holder);
}
else
{
holder=(ViewHolder)convertView.getTag();
}
try
{
holder.txtTitle.setText(mTitleText[position]);
holder.imgGrid.setImageResource(mImgGrid[position]);
}
catch (Exception e)
{
e.printStackTrace();
}
return convertView;
}
public static class ViewHolder
{
private TextView txtTitle;
private ImageView imgGrid;
}
}
导入android.content.Context;
导入android.util.Log;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.view.ViewGroup;
导入android.widget.ArrayAdapter;
导入android.widget.ImageView;
导入android.widget.TextView;
公共类ImageAdapter扩展了ArrayAdapter
{
String TAG=“ImageAdapter”;
私有int资源;
私有整数[]mImgGrid;
私有字符串[]mTitleText;
公共ImageAdapter(上下文上下文,int-resorce,整数[]imgGrid,字符串[]titleText)
{
super(上下文、资源、imgGrid);
Log.i(标记“内置适配器lstcipes”+imgGrid.length);
这个资源=资源;
this.mImgGrid=imgGrid;
this.mTitleText=titleText;
}
@凌驾
公共视图getView(int位置、视图转换视图、视图组父视图)
{
视窗座;
if(convertView==null)
{
LayoutInflater LayoutInflater=LayoutInflater.from(getContext());
convertView=LayoutFlater.inflate(资源、父项、false);
holder=新的ViewHolder();
holder.txtTitle=(TextView)convertView.findViewById(R.id.txtTitle);
holder.imgGrid=(ImageView)convertView.findViewById(R.id.imgGrid);
convertView.setTag(支架);
}
其他的
{
holder=(ViewHolder)convertView.getTag();
}
尝试
{
holder.txtitle.setText(mTitleText[位置]);
holder.imgGrid.setImageResource(mImgGrid[position]);
}
捕获(例外e)
{
e、 printStackTrace();
}
返回视图;
}
公共静态类视图持有者
{
私有文本视图txtTitle;
私有图像视图imgGrid;
}
}
如果您直接使用来自webservice的图像和文本,那么您可以从webservice解析数据,并在ImageView和TextView中进行设置。1)为gridview创建xml布局
<?xml version="1.0" encoding="utf-8"?>
<GridView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/GridView01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:numColumns="auto_fit"
android:columnWidth="80dp"
android:stretchMode="columnWidth"
android:gravity="center"
android:background="@color/white"
>
</GridView>
返回drawable的方法。
Drawable Drawable_from_url(字符串url,字符串src_名称)引发java.net.MalformedURLException,java.io.IOException
{
返回Drawable.cr