android手机全面屏适配

package jp.co.cybird.android.magicaldays;

import android.app.Activity;
import android.app.Application;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Point;
import android.os.Build;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Display;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;

import com.opd2c.magicaldays.bs.R;

public class GameActivityNew implements Application.ActivityLifecycleCallbacks {
    //标准屏宽比
    private float mStandardScreenAspectRatio = 1.68f;

    //屏幕分辨率
    private int screenWidth;
    private int screenHeight;

    private boolean mHasCheckAllScreen;

    private boolean mIsAllScreenDevice;
    
    //判断是否为游戏的主activity
    private Boolean IsMainActivity(final Activity activity) {
        String className = activity.getLocalClassName();

        if (className.endsWith("GameActivity")){

            return true;
        }
        return false;
    }

    //判断是否是全面屏
    private boolean IsAllScreenDevice(Activity context) {
        if (mHasCheckAllScreen) {

            return mIsAllScreenDevice;
        }
        mHasCheckAllScreen = true;

        mIsAllScreenDevice = false;
        // 低于 API 21的，都不会是全面屏。。。
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {

            return false;
        }
        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);

        if (windowManager != null) {

            Display display = windowManager.getDefaultDisplay();

            Point point = new Point();

            display.getRealSize(point);

            float width, height;

            if (point.x < point.y) {

                width = point.x;

                height = point.y;
            }
            else{

                width = point.y;

                height = point.x;
            }
            if (height / width >= 1.97f) {

                mIsAllScreenDevice = true;
            }
        }
        return mIsAllScreenDevice;
    }

    //隐藏下方手机的返回按钮界面
    private void HideBottomKey(Activity activity){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            Log.d("GameActivityNew","KITKAT");
            View decorView = activity.getWindow().getDecorView();
            decorView.setSystemUiVisibility(
                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                            | View.SYSTEM_UI_FLAG_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
        }
    }

    //允许应用显示全面屏
    private void AllowFullScreenDisplay(Activity activity){
        // 隐藏标题
        activity.requestWindowFeature(Window.FEATURE_NO_TITLE);
        Window window = activity.getWindow();
        // 如果需要设置全屏
        window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
            window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN);
            Log.d("GameActivityNew","JELLY_BEAN");
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            WindowManager.LayoutParams lp = window.getAttributes();
            /**
             * 官方Android 9 支持最新的全面屏, https://developer.android.com/about/versions/pie/android-9.0
             * LAYOUT_IN_DISPLAY_CUTOUT_MODE_DEFAULT      仅仅当系统提供的bar完全包含了刘海区时,才允许window扩展到刘海区，否则window不会和刘海区重叠
             * LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES  允许window扩展到刘海区
             * LAYOUT_IN_DISPLAY_CUTOUT_MODE_NEVER        不允许window扩展到刘海区
             */
            lp.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
            window.setAttributes(lp);
            Log.d("GameActivityNew","P");
        }
    }

    @Override
    public void onActivityCreated(final Activity activity, Bundle savedInstanceState){
        if(IsMainActivity(activity)){
            HideBottomKey(activity);
            AllowFullScreenDisplay(activity);
            if(IsAllScreenDevice(activity)){
                //获取手机屏幕分辨率(宽：dm.widthPixels，高：dm.heightPixels)
                DisplayMetrics dm = new DisplayMetrics();
                activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
                screenWidth = dm.widthPixels;
                screenHeight = dm.heightPixels;
                Log.d("GameActivityNew", "widthPixels=" + screenWidth);
                Log.d("GameActivityNew", "heightPixels=" + screenHeight);

                //获取游戏主activity的根layout对象，方便在游戏在屏幕上下方绘制图片，做全面屏适配
                final ViewGroup vg=(ViewGroup)activity.getWindow().getDecorView();
//                activity.getWindow().getDecorView().post(new Runnable() {
//                    @Override
//                    public void run() {
//                        Log.d("GameActivityNewh", Integer.toString( vg.getChildAt(1).getHeight()));
//                    }
//                });
                //顶部图片
                ImageView img = new ImageView(activity);
                //设置图片的长宽
                RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(screenWidth, 196);
                img.setLayoutParams(layoutParams);
                //设置图片的icon
                img.setImageResource(R.drawable.base);
                //创建MarginLayoutParams，参数就填imgView的LayoutParams就行(设置图片的偏移坐标)
                ViewGroup.MarginLayoutParams margin = new ViewGroup.MarginLayoutParams(img.getLayoutParams());
                /*
                 * 给这个MarginLayoutParams添加偏移参数  四个参数(一般只需要顶部和左边就能确定View的位置，后两个参数添0即可)：
                 *       left:第一个参数，是View距离屏幕左边的距离
                 *       top:第二个参数，是Veiw距离屏幕顶部的距离
                 *       right：第三个参数，是View距离屏幕右边的距离
                 *       bottom： 第三个参数，是View距离屏幕底部的距离
                 * */
                margin.setMargins(0, 0, 0, 0);
                RelativeLayout.LayoutParams layoutParams3 = new RelativeLayout.LayoutParams(margin);
                img.setLayoutParams(layoutParams3);
                vg.addView(img);

                //底部图片
                ImageView img2 = new ImageView(activity);
                RelativeLayout.LayoutParams layoutParams2 = new RelativeLayout.LayoutParams(screenWidth, 196);
                img2.setLayoutParams(layoutParams2);
                img2.setImageResource(R.drawable.base1);
                ViewGroup.MarginLayoutParams margin2 = new ViewGroup.MarginLayoutParams(img2.getLayoutParams());
                margin2.setMargins(0, screenHeight - 94 , 0, 0);
                RelativeLayout.LayoutParams layoutParams4 = new RelativeLayout.LayoutParams(margin2);
                img2.setLayoutParams(layoutParams4);
                vg.addView(img2);
            }
        }
    }

    @Override
    public void onActivityStarted(Activity activity){

    }

    @Override
    public void onActivityResumed(Activity activity){

    }

    @Override
    public void onActivityPaused(Activity activity){

    }

    @Override
    public void onActivityStopped(Activity activity){

    }

    @Override
    public void onActivitySaveInstanceState(Activity activity, Bundle outState){

    }

    @Override
    public void onActivityDestroyed(Activity activity){

    }
}

本文地址：https://blog.csdn.net/qq_41165567/article/details/108128581