添加自定义View的Widget

我们widget里面可以使用的控件只有：AnalogClock，Button，Chronometer，ImageButton，mageView，ProgressBar，TextView这7种，要是想用自己自定义的view，必须在frameworks中添加自己自定义的view。

        根据AnalogClockWidget控件，自定义了一个DenqinAnalogClockWidget.java，路径  vendor\mediatek\proprietary\frameworks\base\widget\java\com\mediatek\widget。代码顺便贴出来吧

        

/* Copyright Statement:
 *
 * This software/firmware and related documentation ("MediaTek Software") are
 * protected under relevant copyright laws. The information contained herein is
 * confidential and proprietary to MediaTek Inc. and/or its licensors. Without
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 * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
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 * TO LOOK ONLY TO SUCH THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO.
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 *
 * The following software/firmware and/or related documentation ("MediaTek
 * Software") have been modified by MediaTek Inc. All revisions are subject to
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package com.mediatek.widget;

import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.BroadcastReceiver;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.PaintFlagsDrawFilter;
import android.os.Handler;
import android.text.format.DateUtils;
import android.text.format.Time;
import android.util.AttributeSet;
import android.view.View;
import android.widget.RemoteViews.RemoteView;
import com.mediatek.internal.R;

import java.util.TimeZone;

/**
 * @hide
 */
@RemoteView
public class DenqinAnalogClockWidget extends View {

    private final Paint mPaint = new Paint();
    private static final float STROKE_WIDTH = 4f;
    private static final float STROKE_WIDTH_MS = 3f;
    private static final float HOUR_RADIUS_SCALE = 0.5f;
    private static final float MINUTE_RADIUS_SCALE = 0.8f;
    private static final float OFFSET_RADIUS_SCALE = 0.1f;
    private static final float RADIUS_SCALE = 0.9f;

    private Time mCalendar;
    private float mMinutes;
    private float mHour;
    private String mMonthDay;
    
    private Bitmap mBgBitmap;
    private Bitmap mHourBitmap;
    private Bitmap mMinutesBitmap;

    private boolean mAttached;
    private final Handler mHandler = new Handler();

    public DenqinAnalogClockWidget(Context context) {
        this(context, null);
    }

    public DenqinAnalogClockWidget(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public DenqinAnalogClockWidget(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        mCalendar = new Time();
        mPaint.setStyle(Style.STROKE);
        mPaint.setColor(Color.WHITE);
        mPaint.setAntiAlias(true);
        mPaint.setTextSize(
        		getContext().getResources().getDimension(R.dimen.month_day_size));
        
        mBgBitmap = BitmapFactory.decodeResource(
        		getContext().getResources(), R.drawable.dial_plate);
        mHourBitmap = BitmapFactory.decodeResource(
        		getContext().getResources(), R.drawable.hour);
        mMinutesBitmap = BitmapFactory.decodeResource(
        		getContext().getResources(), R.drawable.minute);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        int x = (getRight() - getLeft()) / 2;
        int y = (getBottom() - getTop()) / 2;
        float xT;
        float yT = (float)y + ((float)mBgBitmap.getHeight()) / 70;
        
        canvas.setDrawFilter(new PaintFlagsDrawFilter(
        		0, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG));
        canvas.drawBitmap(mBgBitmap, 
        		x - mBgBitmap.getWidth() / 2, y - mBgBitmap.getHeight() / 2, mPaint);
        if (mMonthDay.length() == 1) {
        	xT = (float)x + ((float)mBgBitmap.getWidth()) / 7;
        } else {
        	xT = (float)x + ((float)mBgBitmap.getWidth()) / 8;
        }
        canvas.drawText(mMonthDay, xT, yT, mPaint);

        canvas.save();
        canvas.rotate(mHour / 12.0f * 360.0f, x, y);
        canvas.drawBitmap(mHourBitmap, 
        		x - mHourBitmap.getWidth() / 2, y - mHourBitmap.getHeight() / 2, mPaint);
        canvas.restore();

        canvas.save();
        canvas.rotate(mMinutes / 60.0f * 360.0f, x, y);
        canvas.drawBitmap(mMinutesBitmap, x - mMinutesBitmap.getWidth() / 2, 
        		y - mMinutesBitmap.getHeight() / 2, mPaint);
        canvas.restore();
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();

        if (!mAttached) {
            mAttached = true;
            IntentFilter filter = new IntentFilter();
            filter.addAction(Intent.ACTION_TIME_TICK);
            filter.addAction(Intent.ACTION_TIME_CHANGED);
            filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
            getContext().registerReceiverAsUser(mIntentReceiver,
                    android.os.Process.myUserHandle(), filter, null, mHandler);
        }

        mCalendar = new Time();
        onTimeChanged();
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        if (mAttached) {
            getContext().unregisterReceiver(mIntentReceiver);
            mAttached = false;
        }
    }

    private void onTimeChanged() {
        mCalendar.setToNow();

        int hour = mCalendar.hour;
        int minute = mCalendar.minute;
        int second = mCalendar.second;
        mMonthDay = Integer.toString(mCalendar.monthDay);

        mMinutes = minute + second / 60.0f;
        mHour = hour + mMinutes / 60.0f;

        updateContentDescription(mCalendar);
    }

    private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(Intent.ACTION_TIMEZONE_CHANGED)) {
                String tz = intent.getStringExtra("time-zone");
                mCalendar = new Time(TimeZone.getTimeZone(tz).getID());
            }

            onTimeChanged();
            invalidate();
        }
    };

    private void updateContentDescription(Time time) {
        final int flags = DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_24HOUR;
        String contentDescription = DateUtils.formatDateTime(mContext,
                time.toMillis(false), flags);
        setContentDescription(contentDescription);
    }
}

        这个自定义的view是根据AnalogClockWidget修改来的，修改了下时针、分针和表盘。其中用到3张图片和字体大小，资源路径vendor\mediatek\proprietary\frameworks\base\res\res\drawable-xhdpi和vendor\mediatek\proprietary\frameworks\base\res\res\values。然后在symbols.xml中声明一下，路径也是vendor\mediatek\proprietary\frameworks\base\res\res\values

        然后在Widget布局中直接引用显示就可以了

        效果图：