自定义组合控件

一：使用

1：MainActivity.java  (动态修改组件状态)

public class MainActivity extends AppCompatActivity {

    private Combination combination;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        combination = findViewById(R.id.combination_all);
        combination.setLeftListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "我是主界面 左", Toast.LENGTH_SHORT).show();
            }
        });
        combination.setLeftShow(true);
        combination.setRightListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "我是主界面 右", Toast.LENGTH_SHORT).show();
            }
        });
        combination.setRightSetting("", true);
        combination.setTitle("我是标题M");
    }
}

2：activity_main.xml   (相关布局文件)

<com.example.a13305.mvptest.combination.Combination
    android:id="@+id/combination_all"
    app:leftImgShow="true"
    app:rightShow="true"
    app:title="我是谁"
    app:rightContent="登录"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
</com.example.a13305.mvptest.combination.Combination>

二：创建自定义组件

1：values 文件夹下创建attrs.xml文件（匹配自定义属性）

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="Combination">
        <!--左侧Img是否显示-->
        <attr name="leftImgShow" format="boolean" />
        <!--标题内容-->
        <attr name="title" format="string" />
        <!--右侧内容是否显示&&右侧nr-->
        <attr name="rightShow" format="boolean" />
        <attr name="rightContent" format="string" />
    </declare-styleable>
</resources>

2：创建自定义View

import android.content.Context;
import android.content.res.TypedArray;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.example.a13305.mvptest.R;


/**
 * 自定义组合控件
 */

public class Combination extends LinearLayout {
    private LinearLayout img;  // 最左侧返回按键
    private TextView title_tv, right_tv;  // 标题内容，右侧内容
    private boolean leftImg;  //默认左侧返回按钮显示
    private Boolean  rightShow;//   默认右侧显示
    private String title, rightContent; // 标题   右侧内容

    public Combination(Context context) {
        super(context);
        initView(context);
    }

    public Combination(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.Combination);
        leftImg = a.getBoolean(R.styleable.Combination_leftImgShow, true);  // 默认左侧返回按钮显示
        title = a.getString(R.styleable.Combination_title);  // 标题
        rightShow = a.getBoolean(R.styleable.Combination_rightShow, true);  // 默认右侧内容显示
        rightContent = a.getString(R.styleable.Combination_rightContent);  // 右侧内容
        initView(context);
    }

    public Combination(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initView(context);
    }

    /**
     * 加载相关布局
     */
    private void initView(Context context) {
        View view = LayoutInflater.from(context).inflate(R.layout.combination, this, true);
        img = view.findViewById(R.id.medical_back);
        title_tv = findViewById(R.id.title_text);
        right_tv = findViewById(R.id.compile_tv);
        if (leftImg) {
            img.setVisibility(View.VISIBLE);
        }else{
            img.setVisibility(View.GONE);
        }
        if(!TextUtils.isEmpty(title)){
            title_tv.setText(title);
        }
        if (rightShow) {
            right_tv.setVisibility(View.VISIBLE);
        }else{
            right_tv.setVisibility(View.GONE);
        }
        if(!TextUtils.isEmpty(rightContent)){
            right_tv.setText(rightContent);
        }
    }

    /**
     * 左侧返回按钮操作,如果为真，显示，否则不显示
     */
    public void setLeftShow(boolean flag) {
        if (flag) {
            img.setVisibility(View.VISIBLE);
        } else {
            img.setVisibility(View.GONE);
        }
    }

    /**
     * 点击返回按钮执行相关操作
     */
    public void setLeftListener(OnClickListener onClickListener) {
        img.setOnClickListener(onClickListener);
    }

    /**
     * 设置标题显示内容
     */
    public void setTitle(String title) {
        if (!TextUtils.isEmpty(title)) {
            title_tv.setText(title);
        }
    }

    /**
     * 设置右侧显示内容
     */
    public void setRightSetting(String right, boolean flag) {
        Log.i("info","flag::"+flag);
        if (flag) {
            right_tv.setVisibility(View.VISIBLE);
            if (!TextUtils.isEmpty(right)) {
                right_tv.setText(right);
            }
        } else {
            right_tv.setVisibility(View.GONE);
        }
    }
    /**
     * 设置右侧显示内容点击事件
     */
    public void setRightListener(OnClickListener onClickListener) {
        right_tv.setOnClickListener(onClickListener);
    }
}

3：combination.xml（View中加载的布局文件）

<?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="56dp"
    android:background="#ffffff"
    android:orientation="horizontal">

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="2">

        <LinearLayout
            android:id="@+id/medical_back"
            android:layout_width="44dp"
            android:layout_height="match_parent">
            <ImageView
                android:layout_width="20dp"
                android:layout_height="22dp"
                android:layout_gravity="center"
                android:layout_marginLeft="16dp"
                android:src="@mipmap/backtrack">
            </ImageView>
        </LinearLayout>
    </LinearLayout>

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="4"
        android:gravity="center">

        <TextView
            android:text="标题内容"
            android:id="@+id/title_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ellipsize="marquee"
            android:gravity="center"
            android:textSize="20sp" />

    </LinearLayout>

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="2"
        android:gravity="center">

        <TextView
            android:text="登录"
            android:id="@+id/compile_tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:textSize="16sp" />

    </LinearLayout>

</LinearLayout>