一.屏幕分辨率
	1.DisplayMetrics类
		DisplayMetrics dm = getResources().getDisplayMetrics();
        Log.d(TAG, "分辨率(宽): "+dm.widthPixels);
        Log.d(TAG, "分辨率(高): "+dm.heightPixels);
        Log.d(TAG, "xdpi: "+dm.xdpi);  
        Log.d(TAG, "ydpi: "+dm.ydpi);
        Log.d(TAG, "densityDpi: "+dm.densityDpi);
        Log.d(TAG, "density: "+dm.density);
	2.Display类 
        Display display = getWindowManager().getDefaultDisplay();
        Log.d(TAG, "宽度: "+display.getWidth());
        Log.d(TAG, "高度: "+display.getHeight());
  	3.adb命令获取物理尺寸
		adb shell 
		wm size

二.版本号
1.代码
	PackageManager manager = getPackageManager();
        try {
            PackageInfo info = manager.getPackageInfo(this.getPackageName(),0);
            String versionName = info.versionName;
            int versionCode = info.versionCode;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
     }
 2.配置
 	AndroidManifest.xml
	android:versionCode="2"
	android:versionName="2.2.2"
	
	使用AndroidStudio以上无效,需要在build.gradle中修改
	defaultConfig {
        minSdkVersion 17
        targetSdkVersion 23
        versionCode 2
        versionName "2.2.2"
	}