Example usage for android.content Context getApplicationContext

Introduction

In this page you can find the example usage for android.content Context getApplicationContext.

Prototype

public abstract Context getApplicationContext();

Source Link

Document

Return the context of the single, global Application object of the current process.

Usage

From source file:Main.java

public static final Application getApplication(Context context) {
    return (Application) context.getApplicationContext();
}

From source file:Main.java

public static String getVersionName(Context context) {
    try {// w w  w.jav a  2s  .  c o m
        return context.getApplicationContext().getPackageManager()
                .getPackageInfo(context.getApplicationContext().getPackageName(), 0).versionName;
    } catch (PackageManager.NameNotFoundException ex) {
        return "undefined version name";
    }
}

From source file:Main.java

public static int dip2px(Context context, float dipValue) {
    final float scale = context.getApplicationContext().getResources().getDisplayMetrics().density;
    return (int) (dipValue * scale + 0.5f);
}

From source file:Main.java

/**
 * Gets the battery info of device, and then writes it to a file.
 * //from   w  w w.  j a  v  a 2  s .  c o  m
 * @param context the context of application
 */
public static String getBatteryUsageInfo(Context context) {
    Intent batteryIntent = context.getApplicationContext().registerReceiver(null,
            new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
    int rawlevel = batteryIntent.getIntExtra("level", -1);
    double scale = batteryIntent.getIntExtra("scale", -1);
    return String.format("Device has %s of %s battery left", rawlevel, scale);
}

From source file:Main.java

static boolean isPronouncedSound(Context context) {
    Context applicationContext = context.getApplicationContext();
    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(applicationContext);
    return preferences.getBoolean(PLAY_SOUND_ON_SLIDE, true);
}

From source file:Main.java

/**
 * px ---> dp//from ww  w . j a va  2s  . com
 */
public static int px2dp(Context context, float pxValue) {
    final float scale = context.getApplicationContext().getResources().getDisplayMetrics().density;
    return (int) (pxValue / scale + 0.5f);
}

From source file:Main.java

public static int px2sp(Context context, float pxValue) {
    final float fontScale = context.getApplicationContext().getResources().getDisplayMetrics().scaledDensity;
    return (int) (pxValue / fontScale + 0.5f);
}

From source file:Main.java

public static int sp2px(Context context, float spValue) {
    final float fontScale = context.getApplicationContext().getResources().getDisplayMetrics().scaledDensity;
    return (int) (spValue * fontScale + 0.5f);
}

From source file:Main.java

static File createDefaultCacheDir(Context context) {
    final File cache = new File(context.getApplicationContext().getCacheDir(), AMAZON_CACHE);
    if (!cache.exists()) {
        //noinspection ResultOfMethodCallIgnored
        cache.mkdirs();// ww w  .j a  va  2  s. c  o m
    }
    return cache;
}

From source file:Main.java

/**
 * dp ---> px//from   w  ww. j av a 2  s.co m
 */
public static int dp2px(Context context, float dpValue) {
    final float scale = context.getApplicationContext().getResources().getDisplayMetrics().density;
    return (int) (dpValue * scale + 0.5f);
}