Android 自定义对话框中的gridview不工作。。。?
我已尝试将栅格视图添加到自定义对话框中。显示时 对话框会崩溃。Android 自定义对话框中的gridview不工作。。。?,android,Android,我已尝试将栅格视图添加到自定义对话框中。显示时 对话框会崩溃。 但是当尝试在正常活动中显示网格视图时 正在工作(无对话框) 我从开发者android网站上取了一些例子 试图在自定义对话框中集成。 我使用了两个xmlmain.xml和category.xml 这是我的密码: package com.android.test; import android.app.Activity; import android.app.AlertDialog; import android.ap
但是当尝试在正常活动中显示网格视图时 正在工作(无对话框)
我从开发者android网站上取了一些例子 试图在自定义对话框中集成。
我使用了两个xmlmain.xml和category.xml 这是我的密码:
package com.android.test;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class test extends Activity {
/** Called when the activity is first created. */
public final static int CATEGORY_ID=0;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button = (Button)findViewById(R.id.categories);
button.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v) {
showDialog(CATEGORY_ID);
}
});
}
protected Dialog onCreateDialog(int id) {
Dialog dialog;
switch(id) {
case CATEGORY_ID:
AlertDialog.Builder builder;
AlertDialog alertDialog;
Context mContext = this;
LayoutInflater inflater = (LayoutInflater)
mContext.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.categorydialog,
(ViewGroup)
findViewById(R.id.layout_root));
TextView text = (TextView) layout.findViewById(R.id.text);
text.setText("Hello, this is a custom dialog!");
ImageView image = (ImageView)
layout.findViewById(R.id.image);
image.setImageResource(R.drawable.find);
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(this));
gridview.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
Toast.makeText(test.this, "" + position,
Toast.LENGTH_SHORT).show();
}
});
builder = new AlertDialog.Builder(mContext);
builder.setView(layout);
dialog = builder.create();
break;
default:
dialog = null;
}
return dialog;
}
public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
// create a new ImageView for each item referenced by the
Adapter
public View getView(int position, View convertView, ViewGroup
parent) {
ImageView imageView;
if (convertView == null) { // if it's not recycled,
initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new
GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
// references to our images
private Integer[] mThumbIds = {
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find,
R.drawable.info, R.drawable.find
};
}
}
package com.android.test;
导入android.app.Activity;
导入android.app.AlertDialog;
导入android.app.Dialog;
导入android.content.Context;
导入android.os.Bundle;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.view.ViewGroup;
导入android.view.view.OnClickListener;
导入android.widget.AdapterView;
导入android.widget.BaseAdapter;
导入android.widget.Button;
导入android.widget.GridView;
导入android.widget.ImageView;
导入android.widget.TextView;
导入android.widget.Toast;
导入android.widget.AdapterView.OnItemClickListener;
公共类测试扩展活动{
/**首次创建活动时调用。*/
公共最终静态整数类别\u ID=0;
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
按钮按钮=(按钮)findViewById(R.id.categories);
button.setOnClickListener(新建button.OnClickListener(){
公共void onClick(视图v){
showDialog(类别标识);
}
});
}
受保护的对话框onCreateDialog(int id){
对话;
开关(id){
案件类别编号:
AlertDialog.Builder;
警报对话框警报对话框;
Context mContext=这个;
LayoutInflater充气机=(LayoutInflater)
mContext.getSystemService(布局\充气机\服务);
视图布局=充气机。充气(R.layout.categorydialog,
(查看组)
findviewbyd(R.id.layout_root));
TextView text=(TextView)layout.findviewbyd(R.id.text);
setText(“您好,这是一个自定义对话框!”);
ImageView图像=(ImageView)
布局。findViewById(R.id.image);
setImageResource(R.drawable.find);
GridView GridView=(GridView)findViewById(R.id.GridView);
setAdapter(新的ImageAdapter(this));
setOnItemClickListener(新的OnItemClickListener()
{
public void onItemClick(AdapterView父视图、视图v、,
int位置,长id){
Toast.makeText(test.this,“+”位置,
吐司。长度(短)。show();
}
});
builder=新建AlertDialog.builder(mContext);
builder.setView(布局);
dialog=builder.create();
打破
违约:
dialog=null;
}
返回对话框;
}
公共类ImageAdapter扩展BaseAdapter{
私有上下文;
公共图像适配器(上下文c){
mContext=c;
}
public int getCount(){
返回mThumbIds.length;
}
公共对象getItem(int位置){
返回null;
}
公共长getItemId(int位置){
返回0;
}
//为引用的每个项目创建新的ImageView
适配器
公共视图getView(int位置、视图转换视图、视图组
父项){
图像视图图像视图;
如果(convertView==null){//如果它没有被回收,
初始化一些属性
imageView=新的imageView(mContext);
imageView.setLayoutParams(新
布局参数(85,85));
imageView.setScaleType(imageView.ScaleType.CENTER\U裁剪);
设置填充(8,8,8,8);
}否则{
imageView=(imageView)convertView;
}
setImageResource(mThumbIds[position]);
返回图像视图;
}
//参考我们的图像
私有整数[]mThumbIds={
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find,
R.drawable.info,R.drawable.find
};
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="3dip"
android:orientation="vertical">
<Button android:id="@+id/categories"
android:layout_width="150dip"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="Choose categories"
/>
</LinearLayout>
categorydialog.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:id="@+id/layout_root"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
>
<ImageView android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginRight="10dp"
/>
<TextView android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:textColor="#FFF"
/>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
/>
</LinearLayout>
有人能帮我一下吗。更改这行:
GridView gridview = (GridView) findViewById(R.id.gridview);
对这样的事情:
GridView gridview = (GridView) layout.findViewById(R.id.gridview);
更改此行:
GridView gridview = (GridView) findViewById(R.id.gridview);
对这样的事情:
GridView gridview = (GridView) layout.findViewById(R.id.gridview);