Example usage for android.util DisplayMetrics DisplayMetrics

List of usage examples for android.util DisplayMetrics DisplayMetrics

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Introduction

In this page you can find the example usage for android.util DisplayMetrics DisplayMetrics.

Prototype

public DisplayMetrics()

Source Link

Usage

From source file:Main.java

public static DisplayMetrics getDisplayMetrics(Activity activity) {
    if (dm == null) {
        dm = new DisplayMetrics();
        activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
    }/*  ww  w.j a va 2  s.c o  m*/
    return dm;
}

From source file:Main.java

/**
 * Get the required size of the favicon, depending on current screen density.
 * @param activity The current activity.
 * @return The size of the favicon, in pixels.
 *//*w ww  .j  a  va 2 s.c  om*/
public static int getFaviconSize(Activity activity) {
    if (mFaviconSize == -1) {
        DisplayMetrics metrics = new DisplayMetrics();
        activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);

        switch (metrics.densityDpi) {
        case DisplayMetrics.DENSITY_LOW:
            mFaviconSize = 12;
            break;
        case DisplayMetrics.DENSITY_MEDIUM:
            mFaviconSize = 24;
            break;
        case DisplayMetrics.DENSITY_HIGH:
            mFaviconSize = 32;
            break;
        default:
            mFaviconSize = 24;
        }
    }

    return mFaviconSize;
}

From source file:Main.java

/**
 * @param ctx/*from   ww  w . j  a  v a 2s .  com*/
 */
public static float getDensity(Context ctx) {
    if (mMetrics == null) {
        mMetrics = new DisplayMetrics();
        ((WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getMetrics(mMetrics);
    }
    return mMetrics.density;
}

From source file:Main.java

/**
 * Get the required size of the favicon, depending on current screen density.
 * @param activity The current activity.
 * @return The size of the favicon, in pixels.
 *//*from  www .  j a v a2 s  .  c  om*/
public static int getFaviconSizeForBookmarks(Activity activity) {
    if (mFaviconSizeForBookmarks == -1) {
        DisplayMetrics metrics = new DisplayMetrics();
        activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);

        switch (metrics.densityDpi) {
        case DisplayMetrics.DENSITY_LOW:
            mFaviconSizeForBookmarks = 12;
            break;
        case DisplayMetrics.DENSITY_MEDIUM:
            mFaviconSizeForBookmarks = 16;
            break;
        case DisplayMetrics.DENSITY_HIGH:
            mFaviconSizeForBookmarks = 24;
            break;
        default:
            mFaviconSizeForBookmarks = 16;
        }
    }

    return mFaviconSizeForBookmarks;
}

From source file:Main.java

/**
 * Gets the screen density for the device.
 * //from  w w w  . j a  v  a 2 s.  c o  m
 * @param activity
 *          is the current activity.
 * 
 * @return A double value representing the device's screen density.
 */
public static double getDensity(Activity activity) {
    if (density == -1) {
        DisplayMetrics displayMetrics = new DisplayMetrics();
        activity.getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
        density = displayMetrics.density;
    }

    return density;
}

From source file:Main.java

private static DisplayMetrics getDisplayMetrics(Context context) {
    DisplayMetrics dm = new DisplayMetrics();
    ((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(dm);
    return dm;/*from  w ww.  j  a va  2 s . c  o m*/
}

From source file:Main.java

public static int getScreenOrientation(Activity activity) {
    int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
    DisplayMetrics dm = new DisplayMetrics();
    activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
    int width = dm.widthPixels;
    int height = dm.heightPixels;
    int orientation;
    // if the device's natural orientation is portrait:
    if ((rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_180) && height > width
            || (rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270) && width > height) {
        switch (rotation) {
        case Surface.ROTATION_0:
            orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
            break;
        case Surface.ROTATION_90:
            orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
            break;
        case Surface.ROTATION_180:
            orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
            break;
        case Surface.ROTATION_270:
            orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
            break;
        default://from  ww  w .jav a  2 s  .c o m
            Log.e("getScreenOrientation", "Unknown screen orientation. Defaulting to portrait.");
            orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
            break;
        }
    } else {
        // if the device's natural orientation is landscape or if the device
        // is square:

        switch (rotation) {
        case Surface.ROTATION_0:
            orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
            break;
        case Surface.ROTATION_90:
            orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
            break;
        case Surface.ROTATION_180:
            orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
            break;
        case Surface.ROTATION_270:
            orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
            break;
        default:
            Log.e("getScreenOrientation", "Unknown screen orientation. Defaulting to landscape.");
            orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
            break;
        }
    }

    return orientation;
}

From source file:Main.java

public static float getDisplayDensity(Context context) {
    if (sDensity == Float.MAX_VALUE) {
        Display display = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE))
                .getDefaultDisplay();/*  w  ww.java2s. c o m*/
        DisplayMetrics metrics = new DisplayMetrics();
        display.getMetrics(metrics);
        sDensity = metrics.density;
    }
    return sDensity;
}

From source file:Main.java

public static Drawable showUninstallAPKIcon(Context context, String apkPath) {
    String PATH_PackageParser = "android.content.pm.PackageParser";
    String PATH_AssetManager = "android.content.res.AssetManager";
    try {//  w w  w  . ja  va  2 s .co  m
        Class<?> pkgParserCls = Class.forName(PATH_PackageParser);
        Class<?>[] typeArgs = new Class[1];
        typeArgs[0] = String.class;
        Constructor<?> pkgParserCt = pkgParserCls.getConstructor(typeArgs);
        Object[] valueArgs = new Object[1];
        valueArgs[0] = apkPath;
        Object pkgParser = pkgParserCt.newInstance(valueArgs);
        DisplayMetrics metrics = new DisplayMetrics();
        metrics.setToDefaults();
        typeArgs = new Class[4];
        typeArgs[0] = File.class;
        typeArgs[1] = String.class;
        typeArgs[2] = DisplayMetrics.class;
        typeArgs[3] = Integer.TYPE;
        Method pkgParser_parsePackageMtd = pkgParserCls.getDeclaredMethod("parsePackage", typeArgs);
        valueArgs = new Object[4];
        valueArgs[0] = new File(apkPath);
        valueArgs[1] = apkPath;
        valueArgs[2] = metrics;
        valueArgs[3] = 0;
        Object pkgParserPkg = pkgParser_parsePackageMtd.invoke(pkgParser, valueArgs);
        Field appInfoFld = pkgParserPkg.getClass().getDeclaredField("applicationInfo");
        ApplicationInfo info = (ApplicationInfo) appInfoFld.get(pkgParserPkg);
        Class<?> assetMagCls = Class.forName(PATH_AssetManager);
        Constructor<?> assetMagCt = assetMagCls.getConstructor((Class[]) null);
        Object assetMag = assetMagCt.newInstance((Object[]) null);
        typeArgs = new Class[1];
        typeArgs[0] = String.class;
        Method assetMag_addAssetPathMtd = assetMagCls.getDeclaredMethod("addAssetPath", typeArgs);
        valueArgs = new Object[1];
        valueArgs[0] = apkPath;
        assetMag_addAssetPathMtd.invoke(assetMag, valueArgs);
        Resources res = context.getResources();
        typeArgs = new Class[3];
        typeArgs[0] = assetMag.getClass();
        typeArgs[1] = res.getDisplayMetrics().getClass();
        typeArgs[2] = res.getConfiguration().getClass();
        Constructor<?> resCt = Resources.class.getConstructor(typeArgs);
        valueArgs = new Object[3];
        valueArgs[0] = assetMag;
        valueArgs[1] = res.getDisplayMetrics();
        valueArgs[2] = res.getConfiguration();
        res = (Resources) resCt.newInstance(valueArgs);
        if (info.icon != 0) {
            Drawable icon = res.getDrawable(info.icon);
            return icon;
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static int getSoftKeyBarHeight(Context context) {
    // getRealMetrics is only available with API 17 and +
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        DisplayMetrics metrics = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics(metrics);
        int usableHeight = metrics.heightPixels;
        wm.getDefaultDisplay().getRealMetrics(metrics);
        int realHeight = metrics.heightPixels;
        if (realHeight > usableHeight) {
            return realHeight - usableHeight;
        } else {//from  www.ja  v a 2 s .c  o m
            return 0;
        }
    }
    return 0;
}