Android Open Source - campus Utils

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License

The source code is released under:

GNU General Public License

Java Source Code

package lecho.app.campus.utils;
//from w  ww  .ja v  a 2  s.  co  m
import java.io.File;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.graphics.Point;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Build;
import android.util.Log;
import android.util.Pair;
import android.util.TypedValue;
import android.view.Display;
import android.view.WindowManager;

public final class Utils {
  private static final String TAG = "Utils";

  public static boolean launchGMaps(Context context, double latitude, double longitude) {
    final String GMAPS = "geo:";
    final String ZOOM = "?z=17";
    StringBuilder sb = new StringBuilder().append(GMAPS).append(Double.toString(latitude)).append(",")
        .append(Double.toString(longitude)).append(ZOOM);
    try {
      Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(sb.toString()));
      ResolveInfo resolveInfo = context.getPackageManager().resolveActivity(intent,
          PackageManager.MATCH_DEFAULT_ONLY);
      if (null == resolveInfo) {
        Log.e(TAG, "No activity to handle geo intent");
        return false;
      }
      context.startActivity(intent);
      return true;
    } catch (Exception e) {
      Log.e(TAG, "Could not start google navigation", e);
      return false;
    }
  }

  @SuppressLint("DefaultLocale")
  public static boolean launchWebBrowser(Context context, String url) {
    try {
      url = url.toLowerCase();
      if (!url.startsWith("http://") || !url.startsWith("https://")) {
        url = "http://" + url;
      }

      Intent intent = new Intent(Intent.ACTION_VIEW);
      intent.setData(Uri.parse(url));
      ResolveInfo resolveInfo = context.getPackageManager().resolveActivity(intent,
          PackageManager.MATCH_DEFAULT_ONLY);
      if (null == resolveInfo) {
        Log.e(TAG, "No activity to handle web intent");
        return false;
      }
      context.startActivity(intent);
      Log.i(TAG, "Launching browser with url: " + url);
      return true;
    } catch (Exception e) {
      Log.e(TAG, "Could not start web browser", e);
      return false;
    }
  }

  @SuppressWarnings("deprecation")
  @SuppressLint("NewApi")
  public static Pair<Integer, Integer> getScreendDimension(Context ctx) {
    WindowManager wm = (WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE);
    Display display = wm.getDefaultDisplay();
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB_MR2) {
      Pair<Integer, Integer> dimens = new Pair<Integer, Integer>(display.getWidth(), display.getHeight());
      return dimens;
    } else {
      Point size = new Point();
      display.getSize(size);
      Pair<Integer, Integer> dimens = new Pair<Integer, Integer>(size.x, size.y);
      return dimens;
    }

  }

  public static int dp2px(Context context, int dp) {
    // Get the screen's density scale
    final float scale = context.getResources().getDisplayMetrics().density;
    // Convert the dps to pixels, based on density scale
    return (int) (dp * scale + 0.5f);

  }

  /**
   * Returns current ActionBar height for given activity.
   * 
   * @param activity
   * @return
   */
  public static int getActionBarHeight(Activity activity) {
    TypedValue tv = new TypedValue();
    int actionBarHeight = 0;
    if (activity.getTheme().resolveAttribute(com.actionbarsherlock.R.attr.actionBarSize, tv, true)) {
      actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data, activity.getResources()
          .getDisplayMetrics());
    }
    return actionBarHeight;
  }

  public static String getPlaceImagesDir(String symbol) {
    return new StringBuilder(Config.APP_ASSETS_DIR).append(File.separator).append(symbol).toString();
  }

  public static boolean isOnline(Context context) {
    // TODO check timeout
    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnectedOrConnecting()) {
      return true;
    }
    return false;
  }

  public static Pair<String, Integer> getAppVersionAndBuild(Context context) {
    try {
      PackageInfo pInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
      return new Pair<String, Integer>(pInfo.versionName, pInfo.versionCode);
    } catch (Exception e) {
      Log.e(TAG, "Could not get version number");
      return new Pair<String, Integer>("", 0);
    }
  }
}

Java Source Code List

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