ScreenUtils.java
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package com.cnlive.media.utils;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.Display;
import android.view.Window;
import android.view.WindowManager;
import java.lang.reflect.Method;
/**
* 这是一个屏幕工具类，所有方法与屏幕有关
* Created by Shinlone on 2016/8/30.
*/
public class ScreenUtils {
private ScreenUtils() {
throw new UnsupportedOperationException("本屏幕工具类不能被实例化,直接调用静态方法就好");
}
/**
* 横竖屏
*
* @param context
* @return
*/
public static boolean isScreenOriatationPortrait(Context context) {
return context.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT;
}
/**
* 获取屏幕dpi
*
* @param context
* @return
*/
public static int getDpi(Context context) {
int dpi = 0;
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = windowManager.getDefaultDisplay();
DisplayMetrics displayMetrics = new DisplayMetrics();
@SuppressWarnings("rawtypes")
Class c;
try {
c = Class.forName("android.view.Display");
@SuppressWarnings("unchecked")
Method method = c.getMethod("getRealMetrics", DisplayMetrics.class);
method.invoke(display, displayMetrics);
dpi = displayMetrics.heightPixels;
} catch (Exception e) {
e.printStackTrace();
}
return dpi;
}
/**
* 获取虚拟按键的高度
*
* @param context
* @return
*/
public static int getBottomStatusHeight(Context context) {
int totalHeight = getDpi(context);
int contentHeight = getScreenHeight(context);
return totalHeight - contentHeight;
}
/**
* 标题栏高度
*
* @return
*/
public static int getTitleHeight(Activity activity) {
return activity.getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();
}
/**
* 获得状态栏的高度
*
* @param context
* @return
*/
public static int getStatusHeight(Context context) {
int statusHeight = -1;
try {
Class<?> clazz = Class.forName("com.android.internal.R$dimen");
Object object = clazz.newInstance();
int height = Integer.parseInt(clazz.getField("status_bar_height")
.get(object).toString());
statusHeight = context.getResources().getDimensionPixelSize(height);
} catch (Exception e) {
e.printStackTrace();
}
return statusHeight;
}
/**
* 获得屏幕高度
*
* @param context
* @return
*/
public static int getScreenHeight(Context context) {
WindowManager wm = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(outMetrics);
return outMetrics.heightPixels;
}
/**
* 获得屏幕宽度
*
* @param context
* @return
*/
public static int getScreenWidth(Context context) {
WindowManager wm = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(outMetrics);
return outMetrics.widthPixels;
}
/**
* dp转px
*
* @param context
* @param dpVal
* @return
*/
public static int dp2px(Context context, float dpVal) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
dpVal, context.getResources().getDisplayMetrics());
}
/**
* sp转px
*
* @param context
* @param spVal
* @return
*/
public static int sp2px(Context context, float spVal) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
spVal, context.getResources().getDisplayMetrics());
}
/**
* px转dp
*
* @param context
* @param pxVal
* @return
*/
public static float px2dp(Context context, float pxVal) {
final float scale = context.getResources().getDisplayMetrics().density;
return (pxVal / scale);
}
/**
* px转sp
*
* @param context
* @param pxVal
* @return
*/
public static float px2sp(Context context, float pxVal) {
return (pxVal / context.getResources().getDisplayMetrics().scaledDensity);
}
}