ScreenUtils.java
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package com.cjt2325.cameralibrary.util;
import android.content.Context;
import android.graphics.Point;
import android.os.Build;
import android.util.DisplayMetrics;
import android.view.Display;
import android.view.WindowManager;
import java.lang.reflect.InvocationTargetException;
/**
* =====================================
* 作 者: 陈嘉桐
* 版 本：1.1.4
* 创建日期：2017/5/25
* 描 述：
* =====================================
*/
public class ScreenUtils {
public static int getScreenHeight(Context context) {
DisplayMetrics metric = new DisplayMetrics();
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
wm.getDefaultDisplay().getMetrics(metric);
return metric.heightPixels;
}
public static int getScreenWidth(Context context) {
DisplayMetrics metric = new DisplayMetrics();
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
wm.getDefaultDisplay().getMetrics(metric);
return metric.widthPixels;
}
public static int px2sp(Context context, float pxValue) {
final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
return (int) (pxValue / fontScale + 0.5f);
}
public static int dp2px(Context context, int dp) {
DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
return (int) ((dp * displayMetrics.density) + 0.5);
}
public static Point getNavigationBarSize(Context context) {
Point appUsableSize = getAppUsableScreenSize(context);
Point realScreenSize = getRealScreenSize(context);
// navigation bar on the right
if (appUsableSize.x < realScreenSize.x) {
return new Point(realScreenSize.x - appUsableSize.x, appUsableSize.y);
}
// navigation bar at the bottom
if (appUsableSize.y < realScreenSize.y) {
return new Point(appUsableSize.x, realScreenSize.y - appUsableSize.y);
}
// navigation bar is not present
return new Point();
}
public static Point getAppUsableScreenSize(Context context) {
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = windowManager.getDefaultDisplay();
Point size = new Point();
display.getSize(size);
return size;
}
public static Point getRealScreenSize(Context context) {
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = windowManager.getDefaultDisplay();
Point size = new Point();
if (Build.VERSION.SDK_INT >= 17) {
display.getRealSize(size);
} else if (Build.VERSION.SDK_INT >= 14) {
try {
size.x = (Integer) Display.class.getMethod("getRawWidth").invoke(display);
size.y = (Integer) Display.class.getMethod("getRawHeight").invoke(display);
} catch (IllegalAccessException e) {} catch (InvocationTargetException e) {} catch (NoSuchMethodException e) {}
}
return size;
}
}