Close Google Map toolbar

Reference:
https://developers.google.com/maps/documentation/android-api/controls#toolbar

Code sinppet:
mMap.getUiSettings().setMapToolbarEnabled(false);

[Exception] couldn't find class 'com.google.android.gms.measurement.internal.zzz'

References:

http://stackoverflow.com/questions/33196015/error-on-some-devices-couldnt-find-class-com-google-android-gms-measurement

Error log:

01-12 14:45:58.910    4347-4347/? E/dalvikvm﹕ Could not find class 'com.google.android.gms.measurement.internal.zzx', referenced from method com.google.android.gms.measurement.internal.zzt.zzaU

    java.lang.VerifyError: com/google/android/gms/measurement/internal/zzt
            at com.google.android.gms.measurement.AppMeasurementContentProvider.onCreate(Unknown Source)
            at android.content.ContentProvider.attachInfo(ContentProvider.java:1591)
            at android.content.ContentProvider.attachInfo(ContentProvider.java:1562)
            at android.app.ActivityThread.installProvider(ActivityThread.java:4897)
            at android.app.ActivityThread.installContentProviders(ActivityThread.java:4487)
            at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4427)
            at android.app.ActivityThread.access$1500(ActivityThread.java:143)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1302)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5124)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:797)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:613)
            at dalvik.system.NativeStart.main(Native Method)

Code snippet:

MyApplication.java
public class MyApplication extends Application {

    protected void attachBaseContext(Context base) {
        super.attachBaseContext(base);
        MultiDex.install(this);
    }
}

AndroidManifest.xml
<application
        android:name=".MyApplication"
        android:allowBackup="true"
        android:icon="@mipmap/xxxxxx"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

Solution:

This happens because of multi-dexing. When your code is so big that it can't be compiled with a single dex file, we use multidexing. But after that it wouldn't run on all phones

Get application directory

Reference:

http://stackoverflow.com/questions/5527764/get-application-directory

Code snippet:

PackageManager m = getPackageManager();
String s = getPackageName();
try {
    PackageInfo p = m.getPackageInfo(s, 0);
    s = p.applicationInfo.dataDir;
} catch (PackageManager.NameNotFoundException e) {
    Log.w("yourtag", "Error Package name not found ", e);
}

Open Google Play Store for your application

Reference:

http://stackoverflow.com/questions/11753000/how-to-open-the-google-play-store-directly-from-my-android-application

Code snippet:

String appPackageName = "Your app package name";
try {
    startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=" + appPackageName)));
} catch (android.content.ActivityNotFoundException anfe) {
    startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=" + appPackageName)));
}

Center text on a bitmap

Reference:

http://www.skoumal.net/en/android-how-draw-text-bitmap/

Code snippet:

Bitmap cloneMarkerBitmap = oriMarkerBitmap.copy(Bitmap.Config.ARGB_8888,true);
Canvas canvas = new Canvas(cloneMarkerBitmap);
Paint textPaint = new Paint();
textPaint.setColor(mResources.getColor(R.color.white));
textPaint.setTextSize(convertDpToPixel(12));
textPaint.setTextAlign(Paint.Align.CENTER);
textPaint.setTypeface(Typeface.DEFAULT_BOLD);

// draw text to the Canvas center
String markerNumber = Integer.toString(number);
Rect bounds = new Rect();
textPaint.getTextBounds(markerNumber, 0, markerNumber.length(), bounds);
int x = (cloneMarkerBitmap.getWidth())/2;
int y = (cloneMarkerBitmap.getHeight() + bounds.height())/2;
canvas.drawText(markerNumber, x, y, textPaint);

...............

    public float convertDpToPixel(float dp) {
        DisplayMetrics metrics = mResources.getDisplayMetrics();
        float px = dp * metrics.density;
        return px;
    }

Multi-line in EditText

Reference:
http://stackoverflow.com/questions/4233626/allow-multi-line-in-edittext-view-in-android

Code snippet:
<EditText
    android:inputType="textMultiLine" <!-- Multiline input -->
    android:lines="8" <!-- Total Lines prior display -->
    android:minLines="6" <!-- Minimum lines -->
    android:gravity="top|left" <!-- Cursor Position -->
    android:maxLines="10" <!-- Maximum Lines -->
    android:layout_height="wrap_content" <!-- Height determined by content -->
    android:layout_width="fill_parent" <!-- Fill entire width -->
    android:scrollbars="vertical" <!-- Vertical Scroll Bar -->
/>

Send SMS message and get the result

Code snippet:
public void sendSmsMessage(String phoneNumber,String message){
        SmsManager smsManager = SmsManager.getDefault();
        ArrayList<String> messageList = smsManager.divideMessage(message);
        PendingIntent mPI = PendingIntent.getBroadcast(MainEntryActivity.this, 0, new Intent("SMS_SENT"), PendingIntent.FLAG_UPDATE_CURRENT);
        ArrayList<PendingIntent> sentIntents = new ArrayList<PendingIntent>();
        for(int i=0;i<messageList.size();i++){
            sentIntents.add(mPI);
        }
        registerReceiver(smsSentReceiver, new IntentFilter("SMS_SENT"));
        smsManager.sendMultipartTextMessage (phoneNumber, null, messageList, sentIntents, null);
}

private BroadcastReceiver smsSentReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String result = "";
            switch(getResultCode()) {
                case Activity.RESULT_OK:
                    result = "Transmission successful";
                    break;
                case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                    result = "Transmission failed";
                    break;
                case SmsManager.RESULT_ERROR_RADIO_OFF:
                    result = "Radio off";
                    break;
                case SmsManager.RESULT_ERROR_NULL_PDU:
                    result = "No PDU defined";
                    break;
                case SmsManager.RESULT_ERROR_NO_SERVICE:
                    result = "No service";
                    break;
            }
            Log.d(TAG, "send sms result: " + result);
        }
};

@Override
protected void onDestroy() {
        try{
            unregisterReceiver(smsSentReceiver);
        } catch(IllegalArgumentException iae){
            Log.d(TAG,"Receiver not registered");
            iae.printStackTrace();
        }
}