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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* reproduction, modification, use or disclosure of MediaTek Software, and
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* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
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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

<com.mediatek.widget.DenqinAnalogClockWidget
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" />

        效果图：