Android的一些屏幕尺寸的工具类

package com.project.jj.jilibrary.utils;

import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.PixelFormat; import android.graphics.drawable.Drawable; import android.os.Build; import android.util.DisplayMetrics; import android.view.Display; import android.view.View; import android.view.WindowManager;

import java.lang.reflect.Method;

/** * Created by liuhong on 2017/4/5. */

public class DisplayTools { //获取屏幕原始尺寸高度，包括虚拟功能键高度 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; } /** * 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; } /** * 将Drawable转化为Bitmap */ public static Bitmap drawableToBitmap(Drawable drawable) { int width = drawable.getIntrinsicWidth(); int height = drawable.getIntrinsicHeight(); Bitmap bitmap = Bitmap.createBitmap(width, height, drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, width, height); drawable.draw(canvas); return bitmap; }

}