Android软件启动动画及动画结束后跳转的实现方法
程序员文章站
2023-11-26 16:48:10
本文实例讲述了android软件启动动画及动画结束后跳转的实现方法。分享给大家供大家参考,具体如下:
自己写了个小程序,软件启动时,先显示几张图片,每3秒显示一张,图片显...
本文实例讲述了android软件启动动画及动画结束后跳转的实现方法。分享给大家供大家参考,具体如下:
自己写了个小程序,软件启动时,先显示几张图片,每3秒显示一张,图片显示完跳转到首页
1. 图片轮播使用gallery,用法很简单
galleryadapter adapter = new galleryadapter(this, mids); mgallery.setadapter(adapter);
galleryadapter是自定义适配器
public class galleryadapter extends baseadapter { private context mcontext; private int mimageheight; private int[] mids; public galleryadapter(context context, int[] ids) { this.mcontext = context; this.mids = ids; init(); } private void init() { mimageheight = px2dip(mcontext, getscreenheight(mainactivity.this)); } @override public int getcount() { return mids.length; } @override public object getitem(int position) { return position; } @override public long getitemid(int position) { return position; } @override public view getview(int position, view convertview, viewgroup parent) { final imageview imageview = new imageview(mcontext); if (position < mids.length) { int imageid = mids[position]; imageview.setscaletype(imageview.scaletype.center_crop);//设置图片居中 imageview.setlayoutparams(new gallery.layoutparams( gallery.layoutparams.fill_parent, mimageheight)); bitmap bitmap = readbitmap(mcontext, imageid);//用节省内存的方式加载图片,防止oom imageview.setimagebitmap(bitmap); overridependingtransition(r.anim.push_in, r.anim.push_out);//图片切换动画 } return imageview; } }
2. 设置图片切换时间使用timer定时器
timer timer = new timer(); timer.schedule(task, 3000, 3000);// 每3秒切换一张图片 private timertask task = new timertask() { @override public void run() { message message = new message(); message.what = 0; index = mgallery.getselecteditemposition(); handler.sendmessage(message); index++; if (index == mids.length - 1) { this.cancel(); mainactivity.this.finish(); intent intent = new intent(mainactivity.this, test.class); startactivity(intent); } } }; //不能直接在task中更新ui,所以用handler向主线程发送消息 private handler handler = new handler() { @override public void handlemessage(message msg) { super.handlemessage(msg); switch (msg.what) { case 0: mgallery.setselection(index); break; default: break; } } };
3. 读取本地资源图片
public static bitmap readbitmap(context context, int resid) { bitmapfactory.options opt = new bitmapfactory.options(); opt.inpreferredconfig = bitmap.config.rgb_565; opt.inpurgeable = true; opt.ininputshareable = true; // 获取资源图片 inputstream is = context.getresources().openrawresource(resid); return bitmapfactory.decodestream(is, null, opt); }
完整实例代码代码点击此处。
希望本文所述对大家android程序设计有所帮助。
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