Android自定义控件的设计流程

1.在strings.xml文件中，添加自定义声明属性

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="hello">Hello World, SplashActivity!</string>    <string name="app_name">Mobilesafe</string>    <declare-styleable name="my_setting">        <attr name="content" format="string"></attr>        <attr name="title" format="string"></attr>    </declare-styleable></resources>

2.在自定义布局文件my_view.xml中，引用该申明属性

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:woo="http://schemas.android.com/apk/res/com.woo.mobilesafe"    android:layout_width="match_parent"    android:layout_height="wrap_content" >    <TextView        android:id="@+id/tv_myview_title"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:layout_marginLeft="3dip"        android:layout_marginTop="2dip"        android:text="设置的标题"        android:textAppearance="?android:attr/textAppearanceLarge" />    <TextView        android:id="@+id/tv_myview_content"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/tv_myview_title"        android:layout_marginLeft="3dip"        android:layout_marginTop="2dip"        android:text="设置的具体内容" />    <CheckBox        android:id="@+id/cb_myview"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentRight="true"        android:clickable="false"        android:focusable="false" /></RelativeLayout>

3.在相对布局的.java文件中编辑属性

package com.woo.mobilesafe.ui;import com.woo.mobilesafe.R;import android.content.Context;import android.content.res.TypedArray;import android.util.AttributeSet;import android.view.View;import android.widget.CheckBox;import android.widget.RelativeLayout;import android.widget.TextView;public class SettingView extends RelativeLayout {private TextView tv_title;private TextView tv_content;private CheckBox cBox;public SettingView(Context context) {super(context);//挂载布局文件到 当前SettingView中 View view=View.inflate(context, R.layout.my_view, this); tv_content=(TextView) view.findViewById(R.id.tv_myview_content); tv_title=(TextView) view.findViewById(R.id.tv_myview_title); cBox=(CheckBox) view.findViewById(R.id.cb_myview);}public SettingView(Context context, AttributeSet attrs) {super(context, attrs); View view=View.inflate(context, R.layout.my_view, this); tv_content=(TextView) view.findViewById(R.id.tv_myview_content); tv_title=(TextView) view.findViewById(R.id.tv_myview_title); cBox=(CheckBox) view.findViewById(R.id.cb_myview);     //获取my_setting.xml解析的数据 TypedArray a=context.obtainStyledAttributes(attrs,R.styleable.my_setting); String content=a.getString(0); String title=a.getString(1); tv_content.setText(content); tv_title.setText(title); a.recycle();}public boolean isChecked(){return cBox.isChecked();}public void setTitle(String text){tv_title.setText(text);}public void setContent(String text){tv_content.setText(text);}}

4.在布局文件setting.xml中应用自定义的控件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:itheima="http://schemas.android.com/apk/res/com.woo.mobilesafe"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="40.0dip"        android:background="#ff6cbd45" >        <TextView            android:id="@+id/tv_main_title"            android:layout_width="fill_parent"            android:layout_height="fill_parent"            android:gravity="center"            android:text="设 置 中 心"            android:textColor="#ffffff"            android:textSize="18.0dip" />    </LinearLayout>    <cn.itcast.mobilesafe.ui.SettingView        android:id="@+id/sv_autoupdate"        android:layout_width="match_parent"        android:layout_height="wrap_content"        itheima:content="自动更新没有开启"        itheima:title="自动更新设置" >    </cn.itcast.mobilesafe.ui.SettingView></LinearLayout>

5.在SettingActivity中调用setting.xml的布局

package com.woo.mobilesafe;import android.app.Activity;import android.os.Bundle;public class SettingActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//引入setting的布局setContentView(R.layout.setting);}}

6.在清单文件中配置activity.

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.woo.mobilesafe"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="8" />    <uses-permission android:name="android.permission.INTERNET"/>    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>    <application        android:theme="@android:style/Theme.Light.NoTitleBar.Fullscreen"        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name" >        <activity            android:name="com.woo.mobilesafe.SplashActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name=".MainTabActivity"></activity>        <activity android:name=".SettingActivity"></activity>    </application></manifest>

7.在主页面中设置onclick事件

package com.woo.mobilesafe;import com.woo.mobilesafe.adapter.MainTabAdapter;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.GridView;public class MainTabActivity extends Activity {private GridView gv_main;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);gv_main=(GridView) findViewById(R.id.gv_main);//设计数据适配器， gridview数据绑定。gv_main.setAdapter(new MainTabAdapter(this));//图片项目点击事件gv_main.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view, int position,long id) {switch (position) {case 8:Intent intent= new Intent(MainTabActivity.this,SettingActivity.class);startActivity(intent);break;}}});}}