ScreenUtil--可以获取view宽度，屏幕宽度，dp转px等

来源：互联网发布：windows 7 beta 编辑：程序博客网时间：2024/06/06 03:47
public class ScreenUtil {    private int appHeight = 0;    private int appWidth = 0;    private static int StatusBarHeight;    private Context context;    private static ScreenUtil screenUtil;    public static ScreenUtil getInstance() {        return screenUtil;    }    public static void init(Context context) {        screenUtil = new ScreenUtil(context);    }    public ScreenUtil(Context context) {        this.context = context;        DisplayMetrics dm = context.getResources().getDisplayMetrics();        int appHeight = dm.heightPixels;        int appWidth = dm.widthPixels;        if(appWidth > appHeight) {            this.appWidth = appHeight;            this.appHeight = appWidth;        } else {            this.appWidth = appWidth;            this.appHeight = appHeight;        }    }    public int getAppHeight() {        return this.appHeight;    }    public int getAppWidth() {        return this.appWidth;    }    public int px2dip(float pxValue) {        float scale = this.context.getResources().getDisplayMetrics().density;        return (int)(pxValue / scale + 0.5F);    }    public int dip2px(float dipValue) {        float scale = this.context.getResources().getDisplayMetrics().density;        return (int)(dipValue * scale + 0.5F);    }    public int px2sp(float pxValue) {        float fontScale = this.context.getResources().getDisplayMetrics().scaledDensity;        return (int)(pxValue / fontScale + 0.5F);    }    public int sp2px(float spValue) {        float fontScale = this.context.getResources().getDisplayMetrics().scaledDensity;        return (int)(spValue * fontScale + 0.5F);    }    public static int getMeasureWidth(View view) {        view.measure(MeasureSpec.makeMeasureSpec(0, 0), MeasureSpec.makeMeasureSpec(0, 0));        return view.getMeasuredWidth();    }    public static int getMeasureHeight(View view) {        view.measure(MeasureSpec.makeMeasureSpec(0, 0), MeasureSpec.makeMeasureSpec(0, 0));        return view.getMeasuredHeight();    }    public static void setListViewHeightBasedOnMaxHeght(ListView listView, int maxHeight) {        ListAdapter listAdapter = listView.getAdapter();        if(listAdapter != null) {            int totalHeight = 0;            int itemCount = 0;            for(int params = listAdapter.getCount() - 1; params >= 0; --params) {                ++itemCount;                View listItem = listAdapter.getView(params, (View)null, listView);                listItem.measure(0, 0);                if(totalHeight + listItem.getMeasuredHeight() > maxHeight) {                    break;                }                totalHeight += listItem.getMeasuredHeight();            }            if(itemCount < listAdapter.getCount()) {                LayoutParams var7 = listView.getLayoutParams();                var7.height = totalHeight + listView.getDividerHeight() * (itemCount - 1);                listView.setLayoutParams(var7);            }        }    }    public static int getSysScreenBrightness(Context context) {        int screenBrightness = 255;        try {            screenBrightness = System.getInt(context.getContentResolver(), "screen_brightness");        } catch (Exception var3) {            var3.printStackTrace();        }        return screenBrightness;    }    public static void setSysScreenBrightness(Context context, int brightness) {        try {            ContentResolver e = context.getContentResolver();            Uri uri = System.getUriFor("screen_brightness");            System.putInt(e, "screen_brightness", brightness);            e.notifyChange(uri, (ContentObserver)null);        } catch (Exception var4) {            var4.printStackTrace();        }    }    public static int getScreenBrightnessMode(Context context) {        int screenMode = 0;        try {            screenMode = System.getInt(context.getContentResolver(), "screen_brightness_mode");        } catch (Exception var3) {            ;        }        return screenMode;    }    public static boolean isAutoBrightnessMode(Context context) {        return getScreenBrightnessMode(context) == 1;    }    public static void stopAutoBrightness(Context context) {        System.putInt(context.getContentResolver(), "screen_brightness_mode", 0);    }    public static int sp2px(Context context, float spValue) {        float fontScale = context.getResources().getDisplayMetrics().scaledDensity;        return (int)(spValue * fontScale + 0.5F);    }    public static int px2sp(Context context, float pxValue) {        float scaled = context.getResources().getDisplayMetrics().scaledDensity;        return (int)(pxValue / scaled + 0.5F);    }    public static final int getHeightInPx(Context context) {        int height = context.getResources().getDisplayMetrics().heightPixels;        return height;    }    public static final int getWidthInPx(Context context) {        int width = context.getResources().getDisplayMetrics().widthPixels;        return width;    }    public static int dip2px(Context context, float dpValue) {        float scale = context.getResources().getDisplayMetrics().density;        return (int)(dpValue * scale + 0.5F);    }    public static int px2dip(Context context, float pxValue) {        float scale = context.getResources().getDisplayMetrics().density;        return (int)(pxValue / scale + 0.5F);    }    public static int getNavigationBarHeight(Context context) {        int result = 0;        if(hasNavBar(context)) {            Resources res = context.getResources();            int resourceId = res.getIdentifier("navigation_bar_height", "dimen", "android");            if(resourceId > 0) {                result = res.getDimensionPixelSize(resourceId);            }        }        return result;    }    private static boolean hasNavBar(Context context) {        Resources res = context.getResources();        int resourceId = res.getIdentifier("config_showNavigationBar", "bool", "android");        if(resourceId != 0) {            boolean hasNav = res.getBoolean(resourceId);            String sNavBarOverride = getNavBarOverride();            if("1".equals(sNavBarOverride)) {                hasNav = false;            } else if("0".equals(sNavBarOverride)) {                hasNav = true;            }            return hasNav;        } else {            return !ViewConfiguration.get(context).hasPermanentMenuKey();        }    }    private static String getNavBarOverride() {        String sNavBarOverride = null;        if(VERSION.SDK_INT >= 19) {            try {                Class c = Class.forName("android.os.SystemProperties");                Method m = c.getDeclaredMethod("get", new Class[]{String.class});                m.setAccessible(true);                sNavBarOverride = (String)m.invoke((Object)null, new Object[]{"qemu.hw.mainkeys"});            } catch (Throwable var3) {                ;            }        }        return sNavBarOverride;    }    public static boolean isPortrait(Context context) {        return context.getResources().getConfiguration().orientation == 1;    }    public static boolean isLandscape(Context context) {        return context == null?false:context.getResources().getConfiguration().orientation == 2;    }    public static int getStatusBarHeight(Context context) {        if(StatusBarHeight != 0) {            return StatusBarHeight;        } else {            Class c = null;            Object obj = null;            Field field = null;            boolean x = false;            int sbar = 0;            try {                c = Class.forName("com.android.internal.R$dimen");                obj = c.newInstance();                field = c.getField("status_bar_height");                int x1 = Integer.parseInt(field.get(obj).toString());                sbar = context.getResources().getDimensionPixelSize(x1);            } catch (Exception var7) {                var7.printStackTrace();            }            StatusBarHeight = sbar;            return StatusBarHeight;        }    }    public boolean isScreenOriatationPortrait() {        return this.context.getResources().getConfiguration().orientation == 1;    }}
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