（一）MainActivity主佈局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="zhangyanran201800920.bwie.com.gouwuche.activity.MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <FrameLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1">
            <EditText
                android:id="@+id/edt"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="請輸入內容"/>
        </FrameLayout>
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/but"
            android:text="搜尋"
            android:background="#808080"/>
    </LinearLayout>
//實現自定義佈局
    <zhangyanran201800920.bwie.com.gouwuche.widget.CustomView
        android:id="@+id/afl_cotent"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>
 

（二）MainActivity邏輯程式碼

public class MainActivity extends AppCompatActivity {

    private EditText edt;
    private Button but;
    private CustomView afl_cotent;
    private LayoutInflater layoutInflater;
    private TextView tv_attr_tag;
    private List<String> list = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }

    private void initView() {
        //初始化控制元件
        edt = findViewById(R.id.edt);
        but = findViewById(R.id.but);
        afl_cotent = findViewById(R.id.afl_cotent);
        //載入佈局
        layoutInflater = LayoutInflater.from(this);
        //點選事件
        but.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //獲取edit內容
                String s = edt.getText().toString();
                //載入子佈局
                View item = layoutInflater.inflate(R.layout.sub_item, null);
                tv_attr_tag = item.findViewById(R.id.tv_attr_tag);
                list.add(s);
                for (int i = 0; i < list.size(); i++) {
                    tv_attr_tag.setText(list.get(i));
                    tv_attr_tag.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            Intent intent = new Intent(MainActivity.this, CartActivity.class);
                            startActivity(intent);
                        }
                    });
                }
                afl_cotent.addView(item);
            }
        });
    }
}
 

 （二.1）記載子條目的佈局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tv_attr_tag"
        android:layout_margin="10dp"
        />
</LinearLayout>
 

（三）自定義類的邏輯程式碼

public class CustomView extends ViewGroup {
    private int mleftMargin=20;
    private int mtopMargin=20;

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

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

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

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        measureChildren(widthMeasureSpec,heightMeasureSpec);
        int leftMargin = mleftMargin;
        int topMargin = mtopMargin;

        //父控制元件傳進來的寬度和高度以及對應的測量模式
        int sizeWidth = MeasureSpec.getSize(widthMeasureSpec);
        int modeHeight = MeasureSpec.getMode(heightMeasureSpec);

        switch (modeHeight){
            case MeasureSpec.AT_MOST:
                int measuredHeight = 0;
                for (int j = 0; j < getChildCount(); j++) {
                    int measuredWidth = getChildAt(j).getMeasuredWidth();
                    measuredHeight = getChildAt(j).getMeasuredHeight();
                    if (leftMargin+measuredWidth+mleftMargin>getWidth()){
                        leftMargin=mleftMargin;
                        topMargin+=measuredHeight+mtopMargin;
                    }
                    leftMargin+=measuredWidth+mleftMargin;
                }
                topMargin+=measuredHeight+mtopMargin;
                break;
        }
        setMeasuredDimension(sizeWidth,topMargin);
    }

    @Override
    protected void onLayout(boolean b, int i, int i1, int i2, int i3) {
        int leftMargin = mleftMargin;
        int topMargin = mtopMargin;

        for (int j = 0; j < getChildCount(); j++) {
            int measuredWidth = getChildAt(j).getMeasuredWidth();
            int measuredHeight = getChildAt(j).getMeasuredHeight();
            if (leftMargin+measuredWidth+mleftMargin>getWidth()){
                leftMargin=mleftMargin;
                topMargin+=measuredHeight+mtopMargin;
                getChildAt(j).layout(leftMargin,topMargin,leftMargin+measuredWidth,topMargin+measuredHeight);
            }else {
                getChildAt(j).layout(leftMargin,topMargin,leftMargin+measuredWidth,topMargin+measuredHeight);
            }
            leftMargin+=measuredWidth+mleftMargin;
        }
    }
}