自定义控件_速记

1. 控件的Layout文件:

@layout_item.xml

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

   <LinearLayout
      ...
   </LinearLayout>
</merge>

2. 自定义控件的自定义属性:

@attrs.xml

    <declare-styleable name="Item">
        <attr name="title" format="string" />
        <attr name="showTitle" format="boolean" />
    </declare-styleable>

3. 控件类

@Item.java

public class Item extends LinearLayout {

    private TextView mTitleView;
    private boolean showText;

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

    public Item(Context context, AttributeSet attrs) {
        super(context, attrs);
        LayoutInflater.from(context).inflate(R.layout.layout_item, this, true);

        TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.xxxItem);
        String title = array.getString(R.styleable.xxxItem_title);
        showText = array.getBoolean(R.styleable.xxxItem_showText, true);
        array.recycle();// 用完要回收

        setTitle(title);

        //动态添加控件
        if (xxx) {
            mRemarks = new TextView(context);
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                    LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT, 0);
            params.gravity = Gravity.RIGHT | Gravity.CENTER_VERTICAL;// layout_gravity属性
            mRemarks.setGravity(Gravity.CENTER);// gravity属性
            mRemarks.setLayoutParams(params);
            mRemarks.setTextColor(context.getColor(R.color.xxx));
            setRemarks(remarks);
            view.addView(mRemarks, new LayoutParams(
                    LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT, 0));
        }

    }

}

4. 控件的使用

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical">
    
    <com.xxx.xxx.xxx.Item
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:title="xxx" />

</LinearLayout>