JavaScript使用DeviceOne开发实战（四）仿优酷视频应用

[mw_shl_code=javascript,true]page.on("back", function(){
 if (canBack) {
 global.exit();
 } else {
 nf.toast("再按一次退出优酷");
 canBack = true;
 delay3.start();
 }
});
var delay3 = mm("do_Timer");
delay3.delay = 3000;
delay3.interval = 1000;
delay3.on("tick", function(){
 this.stop();
 canBack = false;
});[/mw_shl_code]

[mw_shl_code=javascript,true]
function subChange(num,button,imgs,lbs)
{
    var strings = ["下载","频道","订阅","我的"];
    button.text = strings[num];
    var url = [
          "source://image/main/shouye",
          "source://image/main/pindao",
          "source://image/main/dingyue",
          "source://image/main/wode"
          ];
    for(var i = 0 ; i < 4 ; i++)
  {
      imgs.source = url;
      lbs.fontColor = "222222FF";
  }
  imgs[num].source += "b";
  lbs[num].fontColor = "0080FFFF";
  for(var i = 0 ; i < 4 ; i++)
  {
      imgs.source += ".png";
  }
    img.visible = false;
    bt.visible = false;
}
function indexChange(num,sv,button,imgs,lbs,img,bt)
{
    sv.set({index: num});
  sv.refreshItems();
  subChange(num,button,imgs,lbs);
}
do_button.on("touch",function(data, e){
    if(do_button.text == "下载")
    {
        app.openPage("source://view/download.ui","");
    }
});
//点击底部按钮实现主界面以及底部图片颜色的切换
var action_imgs = [ui("img_0"), ui("img_1"), ui("img_2"), ui("img_3")];
var action_lbs = [ui("lb_0"), ui("lb_1"), ui("lb_2"), ui("lb_3"),];
do_slideview_1.bindItems(listdata );
listdata.addData([
  {template : 0},
  {template : 1},
  {template : 2},
  {template : 3}
]);
do_slideview_1.refreshItems({});
var shouye = ui("shouye");
shouye.on("touch",function(data, e){
    indexChange(0,do_slideview_1,do_button,action_imgs,action_lbs,imageview,do_button_3);
});
var pindao = ui("pindao");
pindao.on("touch",function(data, e){
    indexChange(1,do_slideview_1,do_button,action_imgs,action_lbs,imageview,do_button_3);
});
var dingyue = ui("dingyue");
dingyue.on("touch",function(data, e){
    indexChange(2,do_slideview_1,do_button,action_imgs,action_lbs,imageview,do_button_3);
});
var wode = ui("wode");
wode.on("touch",function(data, e){
    indexChange(3,do_slideview_1,do_button,action_imgs,action_lbs,imageview,do_button_3);
});
//滑动主界面实现底部图片的切换
do_slideview_1.on("indexChanged",function(data, e){
    subChange(data,do_button,action_imgs,action_lbs);
});
[/mw_shl_code]

[mw_shl_code=javascript,true]
var ind = 0;
timer.delay = 0;
timer.interval = 1000;
timer.start({});
timer.on("tick", function(){
    DURATION++;
  if(DURATION == 3){
      ind =(ind+1)%4
      movieview.set({index: ind});
      movieview.refreshItems();
      DURATION = 0;
  }
});[/mw_shl_code]

[mw_shl_code=javascript,true]
var http = mm("do_Http");
http.timeout = 30000;
http.contentType = "application/json";
http.url = "http://h.hiphotos.baidu.com/baike/c0%3Dbaike60%2C5%2C5%2C60%2C20%3Bt%3Dgif/sign=88e9903f8735e5dd8421ad8d17afcc8a/f9198618367adab48dc66b2e89d4b31c8701e44d.jpg";
http.on("success", function(data) {
    do_imageview_1.source="data://xiazai.png";
    do_button_2.text = "下载成功";
});
http.on("progress", function(data) {
  do_ProgressBar_0.progress = data.currentSize * 100 / data.totalSize;
  lb_progress.text = data.currentSize * 100 / data.totalSize + "%";
});
do_button_2.on("touch",function(data, e){
    http.download("data://xiazai.png");
});[/mw_shl_code]

[mw_shl_code=javascript,true]var nf = sm("do_Notification");
//根据ID获取BarcodeView实例对象；
var barcode = ui("do_BarcodeView_1");
start();
function start(){
    //开始启动扫描
    barcode.start(function(data, e) {
        //扫描成功，执行回调函数
        var result = JSON.stringify(data); 
        nf.alert("扫描二维码成功！", "完成")
    });
}
var btn = ui("btn_restart");
btn.on("touch", function(data, e) {
    start();
})
[/mw_shl_code]

[mw_shl_code=javascript,true]var page = sm("do_Page");
var app = sm("do_App");
var do_VideoView_1 = ui("do_VideoView_1");
var do_Button_1 = ui("do_Button_1");
var do_Button_2 = ui("do_Button_2");
var do_Button_3 = ui("do_Button_3");
page.on("back", function(){ app.closePage() });
ui("action_back").on("touch", function(){ app.closePage() });
do_Button_1.on("touch", function(data, e) {
    if(do_Button_1.text == "播放")
    {
        do_VideoView_1.play(0);
        do_Button_1.text = "暂停";
    }
    else if(do_Button_1.text == "暂停")
    {
        do_VideoView_1.pause();
        do_Button_1.text = "继续";
    }
    else if(do_Button_1.text == "继续")
    {
        do_VideoView_1.resume();
        do_Button_1.text = "暂停";
    }
});
do_Button_2.on("touch", function(data, e) {
    do_Button_1.text = "播放";
    do_VideoView_1.stop();
});[/mw_shl_code]

[mw_shl_code=javascript,true]page.on("event1", function(data, e) {
    indexChange(2,do_slideview_1,do_button,action_imgs,action_lbs,imageview,do_button_3);
});[/mw_shl_code]
shouye页面：
[mw_shl_code=javascript,true]do_Button_0.on("touch",function(data, e)
{
    page.fire("event1","");
});[/mw_shl_code]