Custom font in widgets
I am trying to create a simple Android widget that shows the time but uses a custom font. Does anyone know how to do this? I tried this: Problem showing time using custom font
But that won't work. The first getAssets () won't work because it needs context, and if I remove the line that sets the custom font after a couple of seconds, I get a failed transaction error .
Can anyone help or give me a link for a tutorial? Also, is it helpful to update the time with a timer?
My LWidget.java code
public class LWidget extends AppWidgetProvider {
//=============================================================================================
//On Update
//=============================================================================================
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
Timer timer = new Timer();
timer.scheduleAtFixedRate(new MyTime(context, appWidgetManager), 1, 1000);
//views.setImageViewBitmap(R.id.TimeView, buildUpdate(time));
}
//=============================================================================================
//Timer class
//=============================================================================================
private class MyTime extends TimerTask {
RemoteViews remoteViews;
AppWidgetManager appWidgetManager;
ComponentName thisWidget;
DateFormat timeformat = new SimpleDateFormat("kk:mm");
public MyTime(Context context, AppWidgetManager appWidgetManager) {
this.appWidgetManager = appWidgetManager;
remoteViews = new RemoteViews(context.getPackageName(), R.layout.main);
thisWidget = new ComponentName(context, LWidget.class);
}
@Override
public void run() {
Calendar ci = Calendar.getInstance();
String time = timeformat.format(ci.getTime());
remoteViews.setTextViewText(R.id.widget_textview,"Time = " + time);
remoteViews.setImageViewBitmap(R.id.widget_imageview, buildUpdate(time));
appWidgetManager.updateAppWidget(thisWidget, remoteViews);
}
}
//=============================================================================================
//bitmap font
//=============================================================================================
public Bitmap buildUpdate(String time)
{
Bitmap myBitmap = Bitmap.createBitmap(160, 84, Bitmap.Config.ARGB_4444);
Canvas myCanvas = new Canvas(myBitmap);
Paint paint = new Paint();
//if I remove the comment here, getAssets() will not work
//Typeface clock = Typeface.createFromAsset(this.getAssets(),"fonts/Crysta.ttf");
paint.setAntiAlias(true);
paint.setSubpixelText(true);
// paint.setTypeface(clock);
paint.setStyle(Paint.Style.FILL);
paint.setColor(Color.WHITE);
paint.setTextSize(65);
paint.setTextAlign(Align.CENTER);
myCanvas.drawText(time, 80, 60, paint);
return myBitmap;
}
//=============================================================================================
//On receive
//=============================================================================================
@Override
public void onReceive(Context context, Intent intent) {
// v1.5 fix that doesn't call onDelete Action
final String action = intent.getAction();
if (AppWidgetManager.ACTION_APPWIDGET_DELETED.equals(action)) {
final int appWidgetId = intent.getExtras().getInt(
AppWidgetManager.EXTRA_APPWIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID);
if (appWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID) {
this.onDeleted(context, new int[] { appWidgetId });
}
} else {
super.onReceive(context, intent);
}
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:orientation="vertical"
android:layout_gravity="center"
android:layout_height="wrap_content">
<TextView android:id="@+id/widget_textview"
android:text="@string/widget_text"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_gravity="center_horizontal|center"
android:layout_marginTop="5dip"
android:padding="10dip"
android:textColor="@android:color/black"/>
<ImageView
android:id="@+id/widget_imageview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</LinearLayout>
ltime_widget_provider.xml
<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="146dip"
android:minHeight="72dip"
android:updatePeriodMillis="10000"
android:initialLayout="@layout/main"
/>
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Instead of a timer, you should use AlarmManager
. You cannot use a timer because :
AppWidgetProvider
is an extensionBroadcastReceiver
, your process is not guaranteed to continue running after callback methods return.
Use the code here for reference.
getAssets () won't work because it needs context
onUpdate()
provides Context
, no?
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