Android Lollipop 通知图标太小

Question

我开始向我的应用添加通知，并希望它在通知抽屉中显示我的应用图标。问题是，图标真的很小，并没有填满整个圆圈，它在它周围留下了一个浅蓝色（TouchWiz，我认为是白色）边框。像 WhatsApp 这样的应用程序如何让它填满整个圈子而不是调整大小？顺便说一句，在状态栏中看起来不错。

显示通知的代码：

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
                                                        .setSmallIcon(R.drawable.widget_icon)
                                                        .setContentTitle("My notification")
                                                        .setContentText("Hello World!");
        Intent resultIntent = new Intent(this, MainActivity.class);

        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        stackBuilder.addParentStack(MainActivity.class);
        stackBuilder.addNextIntent(resultIntent);

        PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

        mBuilder.setContentIntent(resultPendingIntent);

        NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        mNotificationManager.notify(1, mBuilder.build());

Answer 1

您可以拨打setLargeIcon在通知抽屉中设置图片

NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setLargeIcon(bitmap);

如果您对系统提供的图标大小不满意。你可以自己画。简单代码如下：

public class NotificationIconDrawer {

private Canvas mCanvas;
private Bitmap mBmp;

public NotificationIconDrawer() {
    mBmp = Bitmap.createBitmap(yourWidth, yourHeight, Config.RGB_565);
    mCanvas = new Canvas(mBmp);
}

public Bitmap draw() {
    mCanvas.drawBitmap(bitmap, matrix, paint);
    mCanvas.save();
    return mBmp;
}

}