我有一个数字时钟小部件.如何使用 assets/fonts 中的自定义字体作为显示时钟的 textview 中的默认字体?
I have a digital clock widget. How can I use a custom font from assets/fonts as the default font in the textview showing the clock?
这是我的代码:
package android.tristan.widget.digiclock;
import java.util.Calendar;
import android.app.PendingIntent;
import android.app.Service;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.IBinder;
import android.os.Vibrator;
import android.text.format.DateFormat;
import android.widget.RemoteViews;
public class DigiClock extends AppWidgetProvider {
@Override
public void onDisabled(Context context) {
super.onDisabled(context);
context.stopService(new Intent(context, UpdateService.class));
}
public void onReceive(Context context, Intent intent)
{
super.onReceive(context, intent);
if(intent.getAction().equals("android.tristan.widget.digiclock.CLICK"))
{
Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(50);
final Intent alarmClockIntent = new Intent(Intent.ACTION_MAIN, null);
alarmClockIntent.addCategory(Intent.CATEGORY_LAUNCHER);
final ComponentName cn = new ComponentName("com.android.deskclock", "com.android.deskclock.AlarmClock");
alarmClockIntent.setComponent(cn);
alarmClockIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(alarmClockIntent);
}
if(intent.getAction().equals("android.tristan.widget.digiclock.CLICK_2"))
{
Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(50);
final Intent calendarIntent = new Intent(Intent.ACTION_MAIN, null);
calendarIntent.addCategory(Intent.CATEGORY_LAUNCHER);
final ComponentName cn = new ComponentName("com.android.calendar", "com.android.calendar.LaunchActivity");
calendarIntent.setComponent(cn);
calendarIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(calendarIntent);
}
}
@Override
public void onEnabled(Context context) {
super.onEnabled(context);
context.startService(new Intent(UpdateService.ACTION_UPDATE));
}
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
super.onUpdate(context, appWidgetManager, appWidgetIds);
context.startService(new Intent(UpdateService.ACTION_UPDATE));
final int Top = appWidgetIds.length;
final int Bottom = appWidgetIds.length;
for (int i=0; i<Top; i++)
{
int[] appWidgetId = appWidgetIds;
RemoteViews top=new RemoteViews(context.getPackageName(), R.layout.main);
Intent clickintent=new Intent("android.tristan.widget.digiclock.CLICK");
PendingIntent pendingIntentClick=PendingIntent.getBroadcast(context, 0, clickintent, 0);
top.setOnClickPendingIntent(R.id.TopRow, pendingIntentClick);
appWidgetManager.updateAppWidget(appWidgetId, top);
}
for (int i=0; i<Bottom; i++)
{
int[] appWidgetId = appWidgetIds;
RemoteViews bottom=new RemoteViews(context.getPackageName(), R.layout.main);
Intent clickintent=new Intent("android.tristan.widget.digiclock.CLICK_2");
PendingIntent pendingIntentClick=PendingIntent.getBroadcast(context, 0, clickintent, 0);
bottom.setOnClickPendingIntent(R.id.BottomRow, pendingIntentClick);
appWidgetManager.updateAppWidget(appWidgetId, bottom);
}
}
public static final class UpdateService extends Service {
static final String ACTION_UPDATE = "android.tristan.widget.digiclock.action.UPDATE";
private final static IntentFilter sIntentFilter;
private final static String FORMAT_12_HOURS = "h:mm";
private final static String FORMAT_24_HOURS = "kk:mm";
private String mTimeFormat;
private String mDateFormat;
private String mDayFormat;
private Calendar mCalendar;
static {
sIntentFilter = new IntentFilter();
sIntentFilter.addAction(Intent.ACTION_TIME_TICK);
sIntentFilter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
sIntentFilter.addAction(Intent.ACTION_TIME_CHANGED);
}
@Override
public void onCreate() {
super.onCreate();
reinit();
registerReceiver(mTimeChangedReceiver, sIntentFilter);
}
@Override
public void onDestroy() {
super.onDestroy();
unregisterReceiver(mTimeChangedReceiver);
}
@Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
if (ACTION_UPDATE.equals(intent.getAction())) {
update();
}
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
private void update() {
mCalendar.setTimeInMillis(System.currentTimeMillis());
final CharSequence time = DateFormat.format(mTimeFormat, mCalendar);
final CharSequence date = DateFormat.format(mDateFormat, mCalendar);
final CharSequence day = DateFormat.format(mDayFormat, mCalendar);
RemoteViews views = new RemoteViews(getPackageName(), R.layout.main);
views.setTextViewText(R.id.Time, time);
views.setTextViewText(R.id.Day, day);
views.setTextViewText(R.id.Date, date);
ComponentName widget = new ComponentName(this, DigiClock.class);
AppWidgetManager manager = AppWidgetManager.getInstance(this);
manager.updateAppWidget(widget, views);
}
private void reinit() {
mDayFormat = getString(R.string.day_format);
mDateFormat = getString(R.string.date_format);
mTimeFormat = is24HourMode(this) ? FORMAT_24_HOURS : FORMAT_12_HOURS;
mCalendar = Calendar.getInstance();
}
private static boolean is24HourMode(final Context context) {
return android.text.format.DateFormat.is24HourFormat(context);
}
private final BroadcastReceiver mTimeChangedReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (action.equals(Intent.ACTION_TIME_CHANGED) ||
action.equals(Intent.ACTION_TIMEZONE_CHANGED))
{
reinit();
}
update();
}
};
}
}
需要将字体渲染到画布上，然后将其传递给位图并将其分配给 ImageView.像这样:
What is needed is to render the font onto a canvas, and then pass it on to a bitmap and assign that to an ImageView. Like so:
public Bitmap buildUpdate(String time)
{
Bitmap myBitmap = Bitmap.createBitmap(160, 84, Bitmap.Config.ARGB_4444);
Canvas myCanvas = new Canvas(myBitmap);
Paint paint = new Paint();
Typeface clock = Typeface.createFromAsset(this.getAssets(),"Clockopia.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;
}
那是做字体到图像的部分，这就是它的使用方法:
That's the part doing the font to image thingie, and this is how to use it:
String time = (String) DateFormat.format(mTimeFormat, mCalendar);
RemoteViews views = new RemoteViews(getPackageName(), R.layout.main);
views.setImageViewBitmap(R.id.TimeView, buildUpdate(time));
您可能会注意到，此代码仅在图像视图中显示当前时间，但可以根据需要轻松调整.
As you might notice, this code just shows the current time in the imageview, but it can easily be adjusted to whatever needs.
如文档中所述，ARGB_4444 已被 ARGB_8888 弃用
ARGB_4444 is deprecated for ARGB_8888 as stated in the documentation
此字段在 API 级别 13 中已弃用.由于此配置的质量较差，建议改用 ARGB_8888.
This field was deprecated in API level 13. Because of the poor quality of this configuration, it is advised to use ARGB_8888 instead.
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