Android动画效果Widget（飞行模式）

1. 功能：

创建Widget后，若为飞行模式，点击Widget，取消飞行模式，否则设置为飞行模式。在变化过程中有动画效果。

2. 实现思想：
[align=left]对应main.xml布局文件，Widget由三张图片组成，pane上层左边为airplane，右边为switch点击桌面widget时图标的时候，左边airplane四张图标动态的在切换，直到设置为飞行模式或者取消飞行模式状态完成时，airplane切换停止，同时右边switch图片切换settrings_switch_on或者settrings_switch_off。[/align]
[align=left] [/align]
3. 程序中用到图片资源文件如下：
settings_icon_airplane_01.png




settings_icon_airplane_02.png





settings_icon_airplane_03.png




settings_icon_airplane_04.png



settings_pane_off.png




settings_switch_off.png





settings_switch_on.png





widget_icon_airplane.png

code：
布局文件main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView android:id="@+id/setting_pane"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/settings_pane_off"/>
<ImageView android:id="@+id/setting_airplane"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginLeft="6dip"
android:src="@drawable/settings_icon_airplane_04"/>
<ImageView android:id="@+id/setting_switch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/setting_airplane"
android:layout_centerVertical="true"
android:layout_marginLeft="4dip"
android:src="@drawable/settings_switch_off"/>
</RelativeLayout>

在res下新建xml文件夹，然后新建widget_provider.xml
<?xml version="1.0" encoding="UTF-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="50dip" <-指定宽度度->
android:minHeight="50dip" <-指定高度->
android:initialLayout="@layout/main"/>

新建AirplaneModeEnabler类
public class AirplaneModeEnabler{
//此方法判断是否为飞行模式
public static boolean isAirplaneModeOn(Context context){
return Settings.System.getInt(context.getContentResolver(), Settings.System.AIRPLANE_MODE_ON,0)!=0;
}
//此方法设置或取消飞行模式,enabling参数为true，则设为飞行模式，否则取消飞行模式
public static void setAirplaneModeOn(Context context,boolean enabling){
Settings.System.putInt(context.getContentResolver(), Settings.System.AIRPLANE_MODE_ON, enabling?1:0);
Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
intent.putExtra("state", enabling);
context.sendBroadcast(intent);
}
}

建MyWidget 类，继承AppWidgetProvider，此类则widget第一次创建时执行oupdate方法，
即是广播接受者，也是广播发送者

public class MyWidget extends AppWidgetProvider {

private Context mContext = null;
public RemoteViews remoteViews = new RemoteViews("com.archermind.widget", R.layout.main);
public final static String SET_AIRPLANE_ACTION = "com.archermind.set_airplane_mode";
private static final int START_ANIMATION = 0; //开始动画
private static final int END_ANIMATION = 1; //结束动画
private static Boolean mRunAnimation = false;
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
//接受到消息后开始动画效果，即连续切换4张图片
if (msg.what == START_ANIMATION) {
Log.i("state", "START_ANIMATION: mRunAnimation = " + mRunAnimation);
if (!mRunAnimation) {
return;
}

//更新widget背景图片

remoteViews.setImageViewResource(R.id.setting_airplane, mDrawable[msg.arg1]);
AppWidgetManager appWidgetManger = AppWidgetManager
.getInstance(mContext);
int[] appIds = appWidgetManger.getAppWidgetIds(new ComponentName(
mContext, MyWidget.class));
for (int id: appIds) {
appWidgetManger.updateAppWidget(id, remoteViews);
}

// send message for next frame
Message message = mHandler.obtainMessage(START_ANIMATION);
message.arg1 = (msg.arg1 + 1) % 4;
mHandler.sendMessageDelayed(message, 200);
} else if (msg.what == END_ANIMATION) {  //结束动画，

Log.i("state", "END_ANIMATION: mRunAnimation = " + mRunAnimation);
AppWidgetManager appWidgetManger = AppWidgetManager
.getInstance(mContext);
int[] appIds = appWidgetManger.getAppWidgetIds(new ComponentName(
mContext, MyWidget.class));
for (int id: appIds) {
updateAppWidget(mContext, appWidgetManger, id);
}
}
Log.i("hThreadId",Long.toString(Thread.currentThread().getId()));
}
};

private int[] mDrawable = {
R.drawable.settings_icon_airplane_01,
R.drawable.settings_icon_airplane_02,
R.drawable.settings_icon_airplane_03,
R.drawable.settings_icon_airplane_04
};

@Override
public void onDeleted(Context context, int[] appWidgetIds) {
super.onDeleted(context, appWidgetIds);
Log.i("method", "onDeleted()");
}
@Override
public void onDisabled(Context context) {
super.onDisabled(context);
Log.i("method", "onDisabled()");
}
@Override
public void onEnabled(Context context) {
super.onEnabled(context);
Log.i("method", "onEnabled()");
//创建widgt时，调用此方法，注册电话监听器
TelephonyManager telephonyManager=(TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
telephonyManager.listen( mPhoneStateListener,PhoneStateListener.LISTEN_SERVICE_STATE);
}

//接受到发送到广播时执行此方法
@Override
public void onReceive(Context context, Intent intent) {
Log.i("method", "onReceive()");
super.onReceive(context, intent);
Log.i("action",intent.getAction());
if(mContext ==null){
mContext = context;
}

if(intent.getAction().equals(SET_AIRPLANE_ACTION)){
boolean airplaneMode = AirplaneModeEnabler.isAirplaneModeOn(context);
if(airplaneMode){
AirplaneModeEnabler.setAirplaneModeOn(context, !airplaneMode);
}else{
AirplaneModeEnabler.setAirplaneModeOn(context, !airplaneMode);
}

Log.e("state", "onReceive: mRunAnimation = true");
mRunAnimation = true;
Message msg = mHandler.obtainMessage(START_ANIMATION);
msg.arg1 = 0;
mHandler.sendMessage(msg);
}
}

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
super.onUpdate(context, appWidgetManager, appWidgetIds);
Log.i("method", "onUpdate()");
if(mContext==null){
mContext = context;
}

//创建RemoteViews，并调用updateAppWidget更新背景图片
remoteViews = new RemoteViews(context.getPackageName(), R.layout.main);
int n = appWidgetIds.length;
for (int i = 0; i < n; i++) {
int appWidgetId = appWidgetIds[i];
updateAppWidget(context, appWidgetManager, appWidgetId);
}
Log.i("length of appIds", ""+appWidgetIds.length);
}
//判断当前是否为飞行模式，并设置不同到背景图片
public void updateAppWidget(Context context,
AppWidgetManager appWidgeManger, int appWidgetId) {
boolean airplaneMode = AirplaneModeEnabler.isAirplaneModeOn(context);
if(airplaneMode){
remoteViews.setImageViewResource(R.id.setting_airplane,R.drawable.settings_icon_airplane_04);
remoteViews.setImageViewResource(R.id.setting_switch,R.drawable.settings_switch_on);
}else{
remoteViews.setImageViewResource(R.id.setting_airplane,R.drawable.settings_icon_airplane_04);
remoteViews.setImageViewResource(R.id.setting_switch,R.drawable.settings_switch_off);
}

//单机widget时发送广播

Intent intentClick = new Intent(SET_AIRPLANE_ACTION);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0,
intentClick, 0);
remoteViews.setOnClickPendingIntent(R.id.setting_pane, pendingIntent);
appWidgeManger.updateAppWidget(appWidgetId, remoteViews);
}
//电话监听器，用来监听是否为飞行模式
PhoneStateListener mPhoneStateListener = new PhoneStateListener(){
@Override
public void onServiceStateChanged(ServiceState serviceState) {
super.onServiceStateChanged(serviceState);
Log.i("phThreadId",Long.toString(Thread.currentThread().getId()));
switch(serviceState.getState()){
case ServiceState.STATE_IN_SERVICE:
Log.i("state", "STATE_IN_SERVICE mRunAnimation = false");
mRunAnimation = false;
mHandler.sendMessage(Message.obtain(mHandler, END_ANIMATION));
break;
case ServiceState.STATE_POWER_OFF:
Log.i("state", "STATE_POWER_OFF mRunAnimation = false");
mRunAnimation = false;
mHandler.sendMessage(Message.obtain(mHandler, END_ANIMATION));
break;
case ServiceState.STATE_OUT_OF_SERVICE:
Log.i("state", "STATE_OUT_OF_SERVICE");
break;
case ServiceState.STATE_EMERGENCY_ONLY:
Log.i("state", "STATE_EMERGENCY_ONLY");
break;
}
}
};
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.archermind.widget"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/widget_icon_airplane" android:label="@string/app_name">
<receiver android:name=".MyWidget"
android:label="@string/app_name" android:icon="@drawable/widget_icon_airplane">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
<action android:name="com.archermind.set_airplane_mode" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/widget_provider"/>
</receiver>
</application>
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
</manifest>