横向滑动点击改变颜色

activity_main 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="match_parent">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <HorizontalScrollView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:scrollbars="none">
            <LinearLayout
                android:id="@+id/linrar"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal" />
        </HorizontalScrollView>
    </LinearLayout>
</LinearLayout>

代码实现

public class MainActivity extends AppCompatActivity  {


    LinearLayout linrar;
    ArrayList<String> strList;
    TextView textView;
    String str[] = {
      "演员",  "绅士","怎样","","意外","天后","丑八怪","刚刚好","认真的雪","黄色枫叶","其实",
    };

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

    }

    private void initView() {

        linrar = findViewById(R.id.linrar);

        strList = new ArrayList<String>();
        for (int i = 0; i < str.length; i ++){
            strList.add(str[i]);
        }


        for (int i = 0; i < strList.size(); i ++){
            textView = new TextView(this);
            textView.setText(strList.get(i));
            textView.setPadding(20,20,20,20);
            textView.setId(i);
            textView.setTextColor(getResources().getColor(R.color.colorPrimaryDark));
            textView.setTextSize(18);
            textView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    setLeiXingTab(v.getId());
                }
            });
            linrar.addView(textView);
        }

    }


    private void setLeiXingTab(int pos){
     
        for (int i = 0; i < linrar.getChildCount();i++){

            TextView textView = (TextView) linrar.getChildAt(i);
            if (pos == i){
                textView.setTextColor(getResources().getColor(R.color.colorAccent));
            }else {
                textView.setTextColor(getResources().getColor(R.color.colorPrimaryDark));
            }
        }
    }

}