Android开发学习之LauncherActivity开发启动的列表

Android开发学习之LauncherActivity开发启动的列表

创建项目：OtherActivity

项目运行结果：

建立主Activity:OtherActivity.java

package wwj.otherActivity;

import android.os.Bundle;
import android.app.Activity;
import android.app.LauncherActivity;
import android.content.Intent;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.support.v4.app.NavUtils;

public class OtherActivity extends LauncherActivity {
	
	//定义两个Activity的名称
	String[] names = {"设置程序参数", "查看星际兵种"};
	//定义两个Activity对应的实现类
	Class<?>[] clazzs = {PreferenceActivityTest.class,
			ExpandableListActivityTest.class};
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1
        		, names);
        // 设置该窗口显示的列表所需的Adapter
        setListAdapter(adapter);
    }
    //根据列表项返回指定Activity对应的Intent
    @Override
    protected Intent intentForPosition(int position) {
    	// TODO Auto-generated method stub
    	return new Intent(OtherActivity.this, clazzs[position]);
    }
}

建立第一个列表项的Activity:PreferenceActivityTest.java

package wwj.otherActivity;

import android.os.Bundle;

public class PreferenceActivityTest extends android.preference.PreferenceActivity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		//设置显示参数设置布局
		addPreferencesFromResource(R.xml.preferences);
	}
}

PreferenceActivity使用的界面布局文件

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
	<!-- 设置系统铃声 -->
	<RingtonePreference
	    android:ringtoneType="all"
	    android:title="设置铃声"
	    android:summary="选择铃声"
	    android:showDefault="true"
	    android:key="ring_key"
	    android:showSilent="true">
	</RingtonePreference>
	<PreferenceCategory
	    android:title="个人信息设置组">
	    <!-- 通过输入框填写用户名 -->
	    <EditTextPreference 
	        android:key="name"
	        android:title="用户名"
	        android:summary="填写你的用户名"
	        android:dialogTitle="您所使用的用户名为: "
	        />
	    <!-- 通过列表框选择性别 -->
	    <ListPreference 
	        android:key="gender"
	        android:title="性别"
	        android:summary="选择您的性别"
	        android:dialogTitle="ListPreference"
	        android:entries="@array/gender_name_list"
	        android:entryValues="@array/gender_value_list"
	        />
	</PreferenceCategory>
	<PreferenceCategory 
	    android:title="系统功能设置组">
	    <CheckBoxPreference 
	        android:key="autoSave"
	        android:title="自动保存进度"
	        android:summaryOn="自动保存 ：开启"
	        android:summaryOff="自动保存：关闭"
	        android:defaultValue="true"/>
	</PreferenceCategory>
	</PreferenceScreen>

数组文件：array.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="gender_name_list">
	<item>男</item>
	<item>女</item>
</string-array>
<string-array name="gender_value_list">
	<item>male</item>
	<item>female</item>
</string-array>
</resources>

创建第二个列表项的Activity：ExpandableListActivity.java

package wwj.otherActivity;

import android.app.ExpandableListActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

public class ExpandableListActivityTest extends ExpandableListActivity {
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		ExpandableListAdapter adapter = new BaseExpandableListAdapter() {
			
			int[] logos = new int[]{
					R.drawable.p,
					R.drawable.z,
					R.drawable.t
			};
			private String[] armTypes = new String[]
					{"神族兵种", "虫族兵种", "人族兵种"};
			private String[][] arms = new String[][]{
					{"狂战士", "龙骑士", "黑暗圣堂", "点兵"},
					{"小狗", "刺蛇", "飞龙", "自爆飞机" },
					{"机枪兵", "护士MM", "幽灵"}
			};
			
			//获取指定组位置、指定子列表项处的子列表项数据
			public Object getChild(int groupPosition, int childPosition) {
				// TODO Auto-generated method stub
				return arms[groupPosition][childPosition];
			}
			
			public long getChildId(int groupPosition, int childPosition) {
				return childPosition;};
				
			public int getChildrenCount(int groupPosition) {
					// TODO Auto-generated method stub
					return arms[groupPosition].length;
				}	
			
			private TextView getTextView(){
				AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
						ViewGroup.LayoutParams.FILL_PARENT, 64);
				TextView textView = new TextView(ExpandableListActivityTest.this);
				textView.setLayoutParams(lp);
				textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
				textView.setPadding(36, 0, 0, 0);
				textView.setTextSize(20);
				return textView;
			}
			
			public View getChildView(int groupPosition, int childPosition,
					boolean isLastChild, View convertView, ViewGroup parent) {
				// TODO Auto-generated method stub
				TextView textView = getTextView();
				textView.setText(getChild(groupPosition, childPosition).toString());
				return textView;
			}
			
			//获取指定位置处的组数据
			public Object getGroup(int groupPosition) {
				return armTypes[groupPosition];
			};
			public int getGroupCount() {
				// TODO Auto-generated method stub
				return armTypes.length;
			}
			public long getGroupId(int groupPosition) {
				// TODO Auto-generated method stub
				return groupPosition;
			}
			
			public View getGroupView(int groupPosition, boolean isExpanded,
					View convertView, ViewGroup parent) {
				// TODO Auto-generated method stub
				LinearLayout ll = new LinearLayout(ExpandableListActivityTest.this);
				ll.setOrientation(0);
				ImageView logo = new ImageView(ExpandableListActivityTest.this);
				logo.setImageResource(logos[groupPosition]);
				ll.addView(logo);
				TextView textView = getTextView();
				textView.setText(getGroup(groupPosition).toString());
				ll.addView(textView);
				return ll;
			}

			public boolean hasStableIds() {
				// TODO Auto-generated method stub
				return true;
			}

			public boolean isChildSelectable(int groupPosition,
					int childPosition) {
				// TODO Auto-generated method stub
				return true;
			}
			
		};
		//设置该窗口显示列表
		setListAdapter(adapter);
	}
}