这是一个android开屏布局的实例，可以用于加载广告图片和倒计时的布局。程序中设置的LayoutParams,划分额外空间比例为6分之5，具体权重比例可根据用户自己需求来自定义，异步加载广告图片，相关的Android代码。

具体实现代码如下：

package cn.waps.extend;import android.app.Activity;import android.content.Context;import android.content.res.Configuration;import android.graphics.Color;import android.graphics.drawable.ShapeDrawable;import android.graphics.drawable.shapes.RoundRectShape;import android.os.AsyncTask;import android.os.Handler;import android.os.Looper;import android.view.Gravity;import android.view.View;import android.view.ViewGroup.LayoutParams;import android.widget.LinearLayout;import android.widget.RelativeLayout;import android.widget.TextView;import com.qcn.wzlz.AppConnect;import com.qcn.wzlz.SDKUtils;public class LoadingPopAd { private final static Handler mHandler = new Handler(); private static LoadingPopAd loadingAppPopAd; public static LoadingPopAd getInstance(){ if(loadingAppPopAd == null){ loadingAppPopAd = new LoadingPopAd(); } if (Looper.myLooper() == null) { Looper.prepare(); } return loadingAppPopAd; } /** * 获取开屏布局 * @param context * @param time * @return */ public View getContentView(Context context, int time){ return getLoadingLayout(context, time); } private LinearLayout getLoadingLayout(final Context context, final int time){ // 整体布局 LinearLayout layout = new LinearLayout(context); layout.setOrientation(LinearLayout.VERTICAL); layout.setGravity(Gravity.CENTER); int bg_id = context.getResources().getIdentifier("loading_bg", "drawable", context.getPackageName()); if(bg_id != 0){ layout.setBackgroundResource(bg_id); } // 加载广告图片和倒计时的布局,用与 LinearLayout l_layout = new LinearLayout(context); l_layout.setGravity(Gravity.CENTER); // 设置LayoutParams,划分额外空间比例为6分之5(具体权重比例可根据自己需求自定义) l_layout.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, 1f)); // 加载图片的布局 RelativeLayout pop_layout = new RelativeLayout(context); TextView timeView = new TextView(context); timeView.setText("剩余" + time + "秒"); timeView.setTextSize(10); timeView.setTextColor(Color.BLACK); timeView.setPadding(8, 3, 6, 2); int num = 12; // 对手机进行屏幕判断 int displaySize = SDKUtils.getDisplaySize(context); if(displaySize == 320){ num = 8; }else if(displaySize == 240){ num = 6; }else if(displaySize == 720){ num = 16; }else if(displaySize == 1080){ num = 20; } float[] outerRadii = new float[] { 0, 0, num, num, 0, 0, num, num}; ShapeDrawable timeView_shapeDrawable = new ShapeDrawable(); timeView_shapeDrawable.setShape(new RoundRectShape(outerRadii, null, null)); timeView_shapeDrawable.getPaint().setColor(Color.argb(255, 255, 255, 255)); timeView.setBackgroundDrawable(timeView_shapeDrawable); //异步执行倒计时 //异步加载广告图片 new ShowPopAdTask(context, pop_layout, timeView).execute(); new TimeCountDownTask(timeView, time).execute(); TextView textView = new TextView(context); textView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, 5f)); textView.setText("正在启动,请稍后..."); textView.setGravity(Gravity.CENTER); textView.setTextColor(Color.WHITE); l_layout.addView(pop_layout); layout.addView(l_layout); layout.addView(textView); return layout; } private class TimeCountDownTask extends AsyncTask<Void, Void, Boolean>{ TextView timeView; int limit_time = 0; TimeCountDownTask(TextView timeView, int time){ this.timeView = timeView; this.limit_time = time; } @Override protected Boolean doInBackground(Void... params) { while(limit_time > 0){ mHandler.post(new Runnable(){ @Override public void run() { timeView.setText("剩余" + limit_time + "秒"); } }); try { Thread.sleep(1000); } catch (Exception e) { e.printStackTrace(); } limit_time--; } return null; } } private class ShowPopAdTask extends AsyncTask<Void, Void, Boolean>{ Context context; RelativeLayout pop_layout; LinearLayout popAdView; TextView timeView; int height_full = 0; int height = 0; ShowPopAdTask(Context context, RelativeLayout pop_layout, TextView timeView){ this.context = context; this.pop_layout = pop_layout; this.timeView = timeView; } @Override protected Boolean doInBackground(Void... params) { try { height_full = ((Activity)context).getWindowManager().getDefaultDisplay().getHeight(); int height_tmp = height_full - 75;//75为设备状态栏加标题栏的高度 height = height_tmp * 5/6; while(true){ if(((Activity)context).getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE && height_full <= 480){ popAdView = AppConnect.getInstance(context).getPopAdView(context, height, height); }else{ popAdView = AppConnect.getInstance(context).getPopAdView(context); } if(popAdView != null){ mHandler.post(new Runnable(){ @Override public void run() { pop_layout.addView(popAdView); popAdView.setId(1); //倒计时布局所需的LayoutParams RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); params.addRule(RelativeLayout.ALIGN_TOP, popAdView.getId()); params.addRule(RelativeLayout.ALIGN_RIGHT, popAdView.getId()); // 对手机进行屏幕判断 int displaySize = SDKUtils.getDisplaySize(context); if(displaySize == 320){ params.topMargin=1; params.rightMargin=1; }else if(displaySize == 240){ params.topMargin=1; params.rightMargin=1; }else if(displaySize == 720){ params.topMargin=3; params.rightMargin=3; }else if(displaySize == 1080){ params.topMargin=4; params.rightMargin=4; }else{ params.topMargin=2; params.rightMargin=2; } pop_layout.addView(timeView, params); } }); break; } try { Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); } } } catch (Exception e) { e.printStackTrace(); } return null; } }}