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我想要使用互聯網上可用的Android開放源代碼項目使用AnalogClock的源代碼的自定義AnalogClock類。設置時間與自定義android模擬時鐘從它的原始類
我想讓時鐘設置我想要的時間，而不是當前時間。我沒有找到明確的例子，所以這篇文章可能會有用。將源代碼複製到新文件後，出現一些錯誤。下面是AnalogClock的原始源代碼：
/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.widget;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.BroadcastReceiver;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.text.format.Time;
import android.util.AttributeSet;
import android.view.View;
import android.widget.RemoteViews.RemoteView;
import java.util.TimeZone;
/**
* This widget display an analogic clock with two hands for hours and
* minutes.
*/
@RemoteView
public class AnalogClock extends View {
private Time mCalendar;
private Drawable mHourHand;
private Drawable mMinuteHand;
private Drawable mDial;
private int mDialWidth;
private int mDialHeight;
private boolean mAttached;
private final Handler mHandler = new Handler();
private float mMinutes;
private float mHour;
private boolean mChanged;
public AnalogClock(Context context) {
this(context, null);
}
public AnalogClock(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
!!錯誤mContext - >更改mContext上下文（我能做到這一點）？
public AnalogClock(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
Resources r = mContext.getResources();
!!錯誤com.android.internal.R不能得到解決。 我找到了解決這一問題
mDial = r.getDrawable(Resources.getSystem().getIdentifier("clock_dial","drawable", "android"));
而且同其他線路只是改變名稱以及繪製或設置樣式。
vvvv ---- 但我仍然有一個問題，下面的代碼。
TypedArray a =
context.obtainStyledAttributes(
attrs, com.android.internal.R.styleable.AnalogClock, defStyle, 0);
^^^^ ---- 我不知道如何去改變它，並使其工作
mDial = a.getDrawable(com.android.internal.R.styleable.AnalogClock_dial);
if (mDial == null) {
mDial = r.getDrawable(com.android.internal.R.drawable.clock_dial);
}
mHourHand = a.getDrawable(com.android.internal.R.styleable.AnalogClock_hand_hour);
if (mHourHand == null) {
mHourHand = r.getDrawable(com.android.internal.R.drawable.clock_hand_hour);
}
mMinuteHand = a.getDrawable(com.android.internal.R.styleable.AnalogClock_hand_minute);
if (mMinuteHand == null) {
mMinuteHand = r.getDrawable(com.android.internal.R.drawable.clock_hand_minute);
}
mCalendar = new Time();
mDialWidth = mDial.getIntrinsicWidth();
mDialHeight = mDial.getIntrinsicHeight();
}
@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().registerReceiver(mIntentReceiver, filter, null, mHandler);
}
// NOTE: It's safe to do these after registering the receiver since the receiver always runs
// in the main thread, therefore the receiver can't run before this method returns.
// The time zone may have changed while the receiver wasn't registered, so update the Time
mCalendar = new Time();
// Make sure we update to the current time
onTimeChanged();
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
if (mAttached) {
getContext().unregisterReceiver(mIntentReceiver);
mAttached = false;
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int heightSize = MeasureSpec.getSize(heightMeasureSpec);
float hScale = 1.0f;
float vScale = 1.0f;
if (widthMode != MeasureSpec.UNSPECIFIED && widthSize < mDialWidth) {
hScale = (float) widthSize/(float) mDialWidth;
}
if (heightMode != MeasureSpec.UNSPECIFIED && heightSize < mDialHeight) {
vScale = (float)heightSize/(float) mDialHeight;
}
float scale = Math.min(hScale, vScale);
setMeasuredDimension(resolveSize((int) (mDialWidth * scale), widthMeasureSpec),
resolveSize((int) (mDialHeight * scale), heightMeasureSpec));
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
mChanged = true;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
boolean changed = mChanged;
if (changed) {
mChanged = false;
}
!!!錯誤 - 在哪裏呢mRight，MLEFT ，mBotton，mTop從哪裏來？這不是在這個文件中聲明
int availableWidth = mRight - mLeft;
int availableHeight = mBottom - mTop;
int x = availableWidth/2;
int y = availableHeight/2;
final Drawable dial = mDial;
int w = dial.getIntrinsicWidth();
int h = dial.getIntrinsicHeight();
boolean scaled = false;
if (availableWidth < w || availableHeight < h) {
scaled = true;
float scale = Math.min((float) availableWidth/(float) w,
(float) availableHeight/(float) h);
canvas.save();
canvas.scale(scale, scale, x, y);
}
if (changed) {
dial.setBounds(x - (w/2), y - (h/2), x + (w/2), y + (h/2));
}
dial.draw(canvas);
canvas.save();
canvas.rotate(mHour/12.0f * 360.0f, x, y);
final Drawable hourHand = mHourHand;
if (changed) {
w = hourHand.getIntrinsicWidth();
h = hourHand.getIntrinsicHeight();
hourHand.setBounds(x - (w/2), y - (h/2), x + (w/2), y + (h/2));
}
hourHand.draw(canvas);
canvas.restore();
canvas.save();
canvas.rotate(mMinutes/60.0f * 360.0f, x, y);
final Drawable minuteHand = mMinuteHand;
if (changed) {
w = minuteHand.getIntrinsicWidth();
h = minuteHand.getIntrinsicHeight();
minuteHand.setBounds(x - (w/2), y - (h/2), x + (w/2), y + (h/2));
}
minuteHand.draw(canvas);
canvas.restore();
if (scaled) {
canvas.restore();
}
}
private void onTimeChanged() {
mCalendar.setToNow();
int hour = mCalendar.hour;
int minute = mCalendar.minute;
int second = mCalendar.second;
mMinutes = minute + second/60.0f;
mHour = hour + mMinutes/60.0f;
mChanged = true;
}
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();
}
};
}
誰能告訴我：
- 我怎樣才能讓這個類的工作像一個正常的AnalogClock
- 我怎麼能寫這個類中的方法將適用於我將提供給它的時間？
那堆代碼的哪一部分會給你帶來麻煩？ –
@MarcoForberg它顯示在我的帖子上面標有!!!錯誤 – Marek
「mRight，mLeft，mBotton，mTop從哪裏來？它沒有在這個文件中聲明「，因爲這是你應該知道的類，我假設這些值是在超類中聲明的，如'View' –