ViewFilpper实现TextView广告上滚的效果（一）--入门

来源：互联网发布：cctv5直播软件编辑：程序博客网时间：2024/05/21 11:14

直接贴上代码吧，看注释就ok了

/** * ViewFilpper实现TextView广告上滚的效果 * 可与ViewPager对比 * */public class MainActivity extends AppCompatActivity {    private ViewFlipper viewFlipper;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        viewFlipper = (ViewFlipper) findViewById(R.id.view_filpper);        for(int i = 0; i < 10; i++) {            TextView tv = new TextView(this);            tv.setId(i);            tv.setText("滚动广告效果" + i);            //. addView的参数是View，因此可以添加布局            //. View view = LayoutInflater.from(this).inflate(R.layout.activity_main, null);            viewFlipper.addView(tv);        }        //. 设置动画切换的时间间隔        viewFlipper.setFlipInterval(2000);        //. 设置进入的动画        viewFlipper.setInAnimation(this, R.anim.roll_in);        //. 设置退出的动画        viewFlipper.setOutAnimation(this, R.anim.roll_out);        //. 启动动画，开始循环；停止循环：stopFlipping        viewFlipper.startFlipping();        //. 设置监听        viewFlipper.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                //. 测试单个控件 获取当前控件的id --> succeed                int id = viewFlipper.getCurrentView().getId();                Log.d("execute", id + "");                //. 测试以布局View为单位的 -->succeed                //. View view = viewFlipper.getCurrentView();                //. TextView textView = (TextView) view.findViewById(R.id.tv_num);                //. textView.setText("完全尅");            }        });        //. 循环状态        boolean state = viewFlipper.isFlipping();    }}

滚入跟滚进的布局：

（1）roll_in.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <translate android:fromYDelta="100%p" android:toYDelta="0" android:duration="500"/>    <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="500" /></set>

（2）roll_out.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android">    <translate android:fromYDelta="0" android:toYDelta="-100%p" android:duration="500"/>    <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="500" /></set>

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