zoukankan      html  css  js  c++  java
  • 2021/1/27

    ScrollView滚动条

    滚动到底部:fullScroll()方法

    scrollView.fullScroll(ScrollView.FOCUS_DOWN);滚动到底部

    scrollView.fullScroll(ScrollView.FOCUS_UP);滚动到顶部

    使用按钮滚动

    public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    
        private Button btn_down;
        private Button btn_up;
        private ScrollView scrollView;
        private TextView txt_show;
    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            bindViews();
        }
    
    
        private void bindViews() {
            btn_down = (Button) findViewById(R.id.btn_down);
            btn_up = (Button) findViewById(R.id.btn_up);
            scrollView = (ScrollView) findViewById(R.id.scrollView);
            txt_show = (TextView) findViewById(R.id.txt_show);
            btn_down.setOnClickListener(this);
            btn_up.setOnClickListener(this);
    
            StringBuilder sb = new StringBuilder();
            for (int i = 1; i <= 100; i++) {
                sb.append("呵呵 * " + i + "
    ");
            }
            txt_show.setText(sb.toString());
    
        }
    
        @Override
        public void onClick(View v) {
            switch (v.getId()) {
                case R.id.btn_down:
                    scrollView.fullScroll(ScrollView.FOCUS_DOWN);
                    break;
                case R.id.btn_up:
                    scrollView.fullScroll(ScrollView.FOCUS_UP);
                    break;
            }
        }
    }

     (代码参考菜鸟教程)

  • 相关阅读:
    bzoj2751
    bzoj1483
    bzoj1011
    bzoj1412
    bzoj1820
    bzoj1295
    bzoj3444
    Java--Exchanger用于进行线程间的数据交换
    Java--Semaphore控制并发线程数量
    Java--Spring AOP 源码散点记录(最后整理成一篇博客)
  • 原文地址:https://www.cnblogs.com/qiangini/p/14864758.html
Copyright © 2011-2022 走看看