组合自定义控件的步骤详解

Android

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步骤：

• 1 自定义组合控件的布局settint_view.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:layout_marginTop="10dp"
              android:gravity="center_vertical">
    <TextView
        android:id="@+id/title_tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="5dp"
        android:text="自动更新"/>
    <TextView
        android:id="@+id/des_tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/title_tv"
        android:layout_marginTop="5dp"
        android:layout_marginLeft="15dp"
        android:text="自动更新关闭"
        android:textSize="10dp"
        android:textColor="#dedcdc"/>
    <!--该控件不支持点击事件，且不能获取焦点-->
    <CheckBox
        android:id="@+id/checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginRight="10dp"
        android:checked="true"
        android:layout_alignParentRight="true"
        android:clickable="false"
        android:focusable="false"/>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#36000000"
        android:layout_marginTop="5dp"
        android:layout_below="@id/des_tv"/>
</RelativeLayout>

---

• 2 创建一个自定义子和控件的类SettingView.java

package com.nlte.phonesafe.com.nlte.phonesafe.view;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.nlte.phonesafe.R;
import com.nlte.phonesafe.com.nlte.phonesafe.utils.CacheUtil;
import com.nlte.phonesafe.com.nlte.phonesafe.utils.LogUtil;

/**自定义组合控件
 * Created by NLTE on 2016/3/22 0022.
 */
public class SettingView extends LinearLayout {
    private TextView mTitleTv;//标题文本控件
    private TextView mDesTv;//描述
    private CheckBox mCheckBox;//复选框
    private View rootView;//组合自定义控件界面根节点对象
    private String title;
    private String des_on;
    private String des_off;

    /*1 把自定义组合控件的xml文件实例化为对象，并且添加到当前对象中，作为当前控件的子控件*/
    /*2 自定义方法：操纵组合控件的自控件*/
    public SettingView(Context context) {
        super(context);
        init();
    }
    //布局xml实例化调用
    public SettingView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();

        //通过命名空间和属性名来获取属性值
        title = attrs.getAttributeValue("http://schemas.android.com/apk/res-auto",
                "setting_title");
        des_on = attrs.getAttributeValue("http://schemas.android.com/apk/res-auto",
                "setting_des_on");
        des_off = attrs.getAttributeValue("http://schemas.android.com/apk/res-auto",
                "setting_des_off");
        //初始化自定义控件属性值
        mTitleTv.setText(title);
        if (CacheUtil.getBoolean(context, CacheUtil.APK_UPDATE)){
            mCheckBox.setChecked(true);
            mDesTv.setText(des_on);
        }else {
            mCheckBox.setChecked(false);
            mDesTv.setText(des_off);
        }
    }

    public SettingView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }
    /*初始化自定义组合控件界面*/
    private void init() {
        rootView = View.inflate(getContext(), R.layout.setting_view, this);
        mCheckBox = (CheckBox)rootView.findViewById(R.id.checkbox);
        mTitleTv = (TextView)rootView.findViewById(R.id.title_tv);
        mDesTv = (TextView)rootView.findViewById(R.id.des_tv);
    }
    /*自定义方法*/
    //设置组合控件标题
    public void setTitle(String title){
        mTitleTv.setText(title);
    }
    //设置组合控件描述
    public void setDes(String des){
        mDesTv.setText(des);
    }
    //设置组合控件复选框
    public void setChecked(boolean isChecked){
        mCheckBox.setChecked(isChecked);
        if (isChecked){
            mDesTv.setText(des_on);
        }else {
            mDesTv.setText(des_off);
        }
    }
    //取得组合控件的状态
    public boolean getChecked(){
        return mCheckBox.isChecked();
    }
}

---

• 3 自定义组合控件的属性
  -- 3.1 创建自定义属性/values/attrs.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="SettingView">
        <attr name="setting_title" format="string"/>
        <attr name="setting_des_on" format="string"/>
        <attr name="setting_des_off" format="string"/>
    </declare-styleable>
</resources>

-- 3.2 在xml中调用自定义的组合控件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    tools:context="com.nlte.phonesafe.SettingActivity">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:gravity="center"
        android:textSize="20sp"
        android:background="#8b71ef9d"
        android:text="设置中心"/>
    <com.nlte.phonesafe.com.nlte.phonesafe.view.SettingView
        android:id="@+id/update_sv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:setting_title="自动升级"
        app:setting_des_on="自动升级开启"
        app:setting_des_off="自动升级关闭" />
    <com.nlte.phonesafe.com.nlte.phonesafe.view.SettingView
        android:id="@+id/soft_sv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:setting_title="软件锁"
        app:setting_des_on="软件锁开启"
        app:setting_des_off="软件锁关闭" />

</LinearLayout>

• 4 对控件的调用SettingActivity.java

package com.nlte.phonesafe;

import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;

import com.nlte.phonesafe.com.nlte.phonesafe.utils.CacheUtil;
import com.nlte.phonesafe.com.nlte.phonesafe.view.SettingView;

public class SettingActivity extends AppCompatActivity {
    private Context context;
    private SettingView mUpdateSv;
    private SettingView mSoftLockSv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_setting);
        context = this;
        mUpdateSv = (SettingView)findViewById(R.id.update_sv);
        mSoftLockSv = (SettingView)findViewById(R.id.soft_sv);
        //设置自动升级自定义点击监听事件 每一次点击切换复选状态
        mUpdateSv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mUpdateSv.getChecked()){
                    CacheUtil.putBoolean(context, CacheUtil.APK_UPDATE, false);
                    mUpdateSv.setChecked(false);
                }else {
                    CacheUtil.putBoolean(context, CacheUtil.APK_UPDATE, true);
                    mUpdateSv.setChecked(true);
                }
            }
        });
        //对软件锁的点击事件
        mSoftLockSv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mSoftLockSv.getChecked()){
                    mSoftLockSv.setChecked(false);
                }else {
                    mSoftLockSv.setChecked(true);
                }
            }
        });
    }
}