Android程序《设置》学习记录
A.在3.0版本之前，采用的是prefenceActivity
在MainActivity的oncreate()里面加入
addPreferencesFromResource(R.xml.main_headers);//加载配置文件进来
这部分网上很多介绍，界面很快就能搭建出来了。
wifi的设置介绍为例子
MainSetting----->继承自PreferenceActivity
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.main_headers); //加载配置文件进来
}
main_headers.xml----->标红部分是用于自定义的IconPreferenceScreen的加载，com.android.setting要换成你自己的包
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:coomix="http://schemas.android.com/apk/res/com.android.setting" >
<com.android.setting.IconPreferenceScreen
android:key="wifi_header"
android:summary="@string/wifi_summary"
android:title="@string/wifi_settings"
coomix:image="@drawable/wifiicon" >
<intent
android:action="android.intent.action.MAIN"
android:targetClass="com.android.setting.WifiSetting"
android:targetPackage="com.android.setting" >
</intent>
</com.android.setting.IconPreferenceScreen>
<!-- android:summary="@string/wifi_summary" -->
<com.android.setting.IconPreferenceScreen
android:key="bluetooth_header"
android:summary="@string/bluetooth_summary"
android:title="@string/bluetooth_settings"
coomix:image="@drawable/bluetoothicon" >
<intent
android:action="android.intent.action.MAIN"
android:targetClass="com.android.setting.BlueToothSetting"
android:targetPackage="com.android.setting" >
</intent>
</com.android.setting.IconPreferenceScreen>
<!-- android:summary="@string/bluetooth_summary" -->
<com.android.setting.IconPreferenceScreen
android:key="gps_header"
android:summary="@string/gps_summary"
android:title="@string/gps_settings"
coomix:image="@drawable/gpsicon" >
<intent
android:action="android.intent.action.MAIN"
android:targetClass="com.android.setting.GpsSetting"
android:targetPackage="com.android.setting" >
</intent>
</com.android.setting.IconPreferenceScreen>
<!-- android:summary="@string/gps_summary" -->
<Preference
android:summary="Launches an Intent."
android:title="Intent" >
<intent
android:action="android.intent.action.VIEW"
android:data="http://www.baidu.com" />
</Preference>
</PreferenceScreen>
IconPreferenceScreen.java----->自定义带图标的配置项
package com.android.setting;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.preference.Preference;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
public class IconPreferenceScreen extends Preference {
private static final String TAG = "IconPreferenceScreen";
private Drawable mIcon;
public IconPreferenceScreen(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public IconPreferenceScreen(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
setLayoutResource(R.layout.summary_item);//
TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.Preference, defStyle, 0);//读取自定义的配置加载图片
mIcon = a.getDrawable(R.styleable.Preference_image);// Preference_image 注意我配置文件的写法
}
@Override
public void onBindView(View view) {
super.onBindView(view);
ImageView imageView = (ImageView) view.findViewById(R.id.image);
if (imageView != null && mIcon != null) {
imageView.setImageDrawable(mIcon);//从xml文件读取到image设置图片来源,
}
}
}
当然你需要自己配置R.styleable.Preference，这个在value文件夹下配置。
array.xml----->我写在这里了,注意我的写法
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="Preference">
<attr name="image" format="reference" />
</declare-styleable>
</resources>
summary_item.xml
<?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="55dip"
android:orientation="horizontal" >
<ImageView
android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:paddingLeft="15dip" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_marginBottom="6dip"
android:layout_marginLeft="2dip"
android:layout_marginRight="6dip"
android:layout_marginTop="6dip"
android:layout_weight="1" >
<TextView
android:id="@+android:id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:ellipsize="marquee"
android:fadingEdge="horizontal"
android:singleLine="true"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="22sp" />
<TextView
android:id="@+android:id/summary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@android:id/title"
android:layout_below="@android:id/title"
android:layout_gravity="center_horizontal|center_vertical"
android:maxLines="2"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textSize="10dip" />
</RelativeLayout>
</LinearLayout>
大致流程写完了，其他的按照wifi的设置就行了。
B.在3.0版本之后，采用的PreferenceActivity+PreferenceFragment方式
在MainActivity.java中
@Override
public void onBuildHeaders(List<Header> target) {
loadHeadersFromResource(R.xml.main_headers, target);
}
点击相应的fragment就可以自动根据配置文件进入不同的界面设置
wifi的设置介绍为例子
main_headers.xml----->WifiSetting、BlueToothSetting、GpsSetting等是自定义的Fragment
<?xml version="1.0" encoding="utf-8"?>
<preference-headers
xmlns:android="http://schemas.android.com/apk/res/android"
>
<header android:fragment="com.android.setting.WifiSetting"
android:icon="@drawable/wifiicon"
android:title="@string/wifi_settings"
android:summary="@string/wifi_summary" />
<header android:fragment="com.android.setting.BlueToothSetting"
android:icon="@drawable/bluetoothicon"
android:title="@string/bluetooth_settings"
android:summary="@string/bluetooth_summary" />
<header android:fragment="com.android.setting.GpsSetting"
android:icon="@drawable/gpsicon"
android:title="@string/gps_settings"
android:summary="@string/gps_summary" />
<header android:title="Intent"
android:summary="Launches an Intent.">
<intent android:action="android.intent.action.VIEW"
android:data="http://www.baidu.com" />
</header>
</preference-headers>
WifiSetting.java:
package com.android.setting;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceChangeListener;
import android.preference.Preference.OnPreferenceClickListener;
import android.preference.PreferenceCategory;
import android.preference.PreferenceFragment;
import android.widget.Toast;
public class WifiSetting extends PreferenceFragment implements
/*OnPreferenceChangeListener, */OnPreferenceClickListener {
CheckBoxPreference mEditPrefs;
PreferenceCategory a;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Load the preferences from an XML resource
addPreferencesFromResource(R.xml.wifi_fragment);
mEditPrefs= (CheckBoxPreference)findPreference("wifi_switch");
/*mEditPrefs.setOnPreferenceChangeListener(this);*/
mEditPrefs.setOnPreferenceClickListener(this);
a= (PreferenceCategory)findPreference("wifi");
}
/*@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
return false;
}*/
@Override
public boolean onPreferenceClick(Preference preference) {
// TODO Auto-generated method stub
return false;
}
private void showToast(String arg){
Toast.makeText(getActivity(), arg, Toast.LENGTH_SHORT).show();
}
}
WifiSetting.xml:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
android:title="@string/wifi_settings" >
<ListPreference
android:dialogTitle="@string/auto_update_frequency_title"
android:entries="@array/auto_update_frequency_entry"
android:entryValues="@array/auto_update_frequency_value"
android:key="@string/auto_update_frequency_key"
android:summary="@string/auto_update_frequency_summary" />
<PreferenceCategory android:key="wifi" >
<CheckBoxPreference
android:key="@string/wifi_switch_key"
android:summaryOff="@string/wifi_switch_summary_off"
android:summaryOn="@string/wifi_switch_summary_on"
android:title="@string/wifi_switch_title" />
</PreferenceCategory>
</PreferenceScreen>
就这样界面就可以出来了o(∩_∩)o ，当然其他几个的界面需要自己按照wifi的设置写出来。
现在两个界面我都实现了~~~~
后面测试响应事件中~~~~
（找不到string的资源文件自己去strings.xml配置把）
