自定義通用標題欄

1.com_title.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="60dp">
    <TextView
        android:id="@+id/text_title"
        android:layout_width="match_parent"
        android:layout_height="70dp"
        android:text="檢測"
        android:gravity="center"
        android:textSize="20sp"
        android:textColor="@color/whrite"
        android:background="@color/colorPrimary"/>
    <LinearLayout
        android:id="@+id/linear_back"
        android:layout_width="60dp"
        android:gravity="center"
        android:layout_height="match_parent">
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@mipmap/jiantoubk"/>
    </LinearLayout>
</RelativeLayout>

2.ComTitle.java

public class ComTitle extends RelativeLayout {
    private TextView textView;
    private LinearLayout linearLayout;

    public ComTitle(Context context) {
        this(context,null);
    }

    public ComTitle(Context context, AttributeSet attrs) {
        this(context, attrs,0);
        initView(context,attrs);
    }

    public ComTitle(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);

    }


    private void initView(Context context,AttributeSet attrs) {
        View view = LayoutInflater.from(context).inflate(R.layout.com_title,this);
        view.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
        textView = view.findViewById(R.id.text_title);
        linearLayout = view.findViewById(R.id.linear_back);
        linearLayout.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                Activity activity = (Activity) context;
                activity.finish();
            }
        });
        init(context,attrs);

    }

    private void init(Context context, AttributeSet attrs) {
        TypedArray typedArray = context.obtainStyledAttributes(attrs,R.styleable.ComTitle);
        String title = typedArray.getString(R.styleable.ComTitle_title);
        int linearBk = typedArray.getInt(R.styleable.ComTitle_visibility,1);//默認value值
        if (linearBk == 0){
            linearLayout.setVisibility(VISIBLE);
        }else {
            linearLayout.setVisibility(GONE);
        }
        textView.setText(title);

    }


}

3.在value文件夾下創建attr.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="ComTitle">
        <attr name="title" format="string"/>
        <attr name="visibility" format="enum">
            <enum name="visible" value="0"/>
            <enum name="gone" value="1"/>
        </attr>

    </declare-styleable>
</resources>

4.在layout中引用

<com.gsunis.lanepad.views.ComTitle
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:visibility="visible"
        app:title="流水詳情"></com.gsunis.lanepad.views.ComTitle>