Framework StatusBar添加（wifi,bluetooth,gps,sound,rotate）控制面板

Framework StatusBar添加（wifi,bluetooth,gps,sound,rotate）控制面板

 
学android已经数月了，最近跳槽了一家做手机的公司，一去就是改framework层里的代码，那个纠结啊。第一个项目就是改statusbar，添加控制面板开关。
因为项目公司里任何的资源都带不出来，就用我自己的手机截图示范，跟android原生statusbar对比，源码主要以wifi为示例。





我做的项目是添加WIFI,BLUETOOTH,GPS,SOUND,自动旋转，个人感觉自动旋转是最让人纠结的，因为无法监听到状态的广播，不过可以监听数据库里的变化。我主要以WIFI项目示范，其他的四个提下我的思路，欢迎大家探讨。
修改的图片文件位置：
 
 

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platform\frameworks\base\packages\SystemUI\res\drawable-hdpi  

platform\frameworks\base\packages\SystemUI\res\drawable-hdpi

添加switch_wifi_on.png,switch_wifi_off.png,switch_ind_on.png,switch_ind_off.png,swith_bg
修改的layout文件位置：

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platform\frameworks\base\packages\SystemUI\res\layout\status_bar_expanded.xml  

platform\frameworks\base\packages\SystemUI\res\layout\status_bar_expanded.xml

修改的string文件位置：
中文

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platform\frameworks\base\packages\SystemUI\res\values-zh-rCN\strings.xml  

platform\frameworks\base\packages\SystemUI\res\values-zh-rCN\strings.xml

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英文  

英文

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">platform\frameworks\base\packages\SystemUI\res\values\strings.xml  

<pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="html"
name="code">platform\frameworks\base\packages\SystemUI\res\values\strings.xml

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代码文件位置：

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">platform\frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\StatusBarService.java  

<pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="html"
name="code">platform\frameworks\base\packages\SystemUI\src\com\android\systemui\statusbar\StatusBarService.java

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</pre>在status_bar_expanded.xml里添加5个开关的排列,添加在最顶层的android:background="@drawable/title_bar_portrait"的这个LinearLayout的上面，那样控制面板就会显示在最顶层了，大家看下源码就知道了，下面添加的是wifi的，添加其他的开关继续在里面添加即可。  

</pre>
在status_bar_expanded.xml里添加5个开关的排列,添加在最顶层的
android:background="@drawable/title_bar_portrait"的这个LinearLayout的上面，那样控制
面板就会显示在最顶层了，大家看下源码就知道了，下面添加的是wifi的，添加其他的开关继续在里面添加即可。

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">    <LinearLayout   
        android:layout_width="match_parent"  
        android:layout_height="wrap_content"  
        android:background="@drawable/switch_bg">  
        <LinearLayout   
            android:layout_width="match_parent"  
            android:layout_height="wrap_content"  
            android:id="@+id/switch_wifi"  
            >  
            <ImageView android:layout_width="wrap_content"  
                android:layout_height="wrap_content"  
                android:id="@+id/switch_wifi_img"/>  
            <TextView android:layout_width="wrap_content"  
                android:layout_height="wrap_content"  
                android:id="@+id/switch_wifi_text"/>  
            <ImageView android:layout_width="fill_parent"  
                android:layout_height="wrap_content"  
                android:id="@+id/switch_ind_state"/>  
        </LinearLayout>  
    </LinearLayout>  

<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">	<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/switch_bg">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/switch_wifi"
>
<ImageView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/switch_wifi_img"/>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/switch_wifi_text"/>
<ImageView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/switch_ind_state"/>
</LinearLayout>
</LinearLayout>

功能控制添加在StatusBarService.xml文件里：

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定义变量：  

定义变量：

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">    private WifiManager mWifiManager;  
    private IntentFilter mWifiStateFilter;  
      
    LinearLayout mWifiState;  
    ImageView mWifiImg;  
    TextView mWifiText;  
    ImageView mWifiInd;  

<pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="java" name="code">    private WifiManager mWifiManager;
private IntentFilter mWifiStateFilter;

LinearLayout mWifiState;
ImageView mWifiImg;
TextView mWifiText;
ImageView mWifiInd;

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</pre>在private void makeStatusBarView(Context context)定义这些变量的值及要用的广播等。  

</pre>在private void makeStatusBarView(Context context)定义这些变量的值及要用的广播等。

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">        mWifiState=(LinearLayout)expanded.findViewById(R.id.switch_wifi);  
        mWifiState.setOnClickListener(mWifiChangeListener);  
        mWifiImg=(ImageView)expanded.findViewById(R.id.switch_wifi_img);  
        mWifiText=(TextView)expanded.findViewById(R.id.switch_wifi_text);  
        mWifiInd=(ImageView)expanded.findViewById(R.id.switch_ind_state);  
          
        mWifiManager = (WifiManager) getSystemService(WIFI_SERVICE);  
        mWifiStateFilter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION);  
        registerReceiver(mWifiStateReceiver, mWifiStateFilter);  

<pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="html" name="code">
mWifiState=(LinearLayout)expanded.findViewById(R.id.switch_wifi);
mWifiState.setOnClickListener(mWifiChangeListener);
mWifiImg=(ImageView)expanded.findViewById(R.id.switch_wifi_img);

mWifiText=(TextView)expanded.findViewById(R.id.switch_wifi_text);

mWifiInd=(ImageView)expanded.findViewById(R.id.switch_ind_state);

mWifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
mWifiStateFilter = new
IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION);
registerReceiver(mWifiStateReceiver, mWifiStateFilter);

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然后在其他位置添加广播，定义的5个状态的样式及点击切换等。  

然后在其他位置添加广播，定义的5个状态的样式及点击切换等。

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">    
    private final BroadcastReceiver mWifiStateReceiver = new BroadcastReceiver() {  
        @Override  
        public void onReceive(Context context, Intent intent) {  
            if (intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {  
                handleWifiStateChanged(intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,  
                            mWifiManager.getWifiState()));  
            }  
        }  
    };  
    private void handleWifiStateChanged(int wifiState) {  
        switch(wifiState){  
        case WifiManager.WIFI_STATE_DISABLED:  
            mWifiImg.setBackgroundResource(R.drawable.switch_wifi_off);  
            mWifiText.setText(R.string.switch_wifi_text_off);  
            mWifiInd.setBackgroundResource(R.drawable.switch_ind_off);  
            break;  
        case WifiManager.WIFI_STATE_DISABLING:  
            mWifiImg.setBackgroundResource(R.drawable.switch_wifi_on);  
            mWifiText.setText(R.string.switch_wifi_text_closing);  
            mWifiInd.setBackgroundResource(R.drawable.switch_ind_on);  
            break;  
        case WifiManager.WIFI_STATE_ENABLED:  
            mWifiImg.setBackgroundResource(R.drawable.switch_wifi_on);  
            mWifiText.setText(R.string.switch_wifi_text_on);  
            mWifiInd.setBackgroundResource(R.drawable.switch_ind_on);  
            break;  
        case WifiManager.WIFI_STATE_ENABLING:  
            mWifiImg.setBackgroundResource(R.drawable.switch_wifi_off);  
            mWifiText.setText(R.string.switch_wifi_text_opening);  
            mWifiInd.setBackgroundResource(R.drawable.switch_ind_off);  
            break;  
        case WifiManager.WIFI_STATE_UNKNOWN:  
            mWifiImg.setBackgroundResource(R.drawable.switch_wifi_off);  
            mWifiText.setText(R.string.switch_wifi_text_off);  
            mWifiInd.setBackgroundResource(R.drawable.switch_wifi_off);  
            break;  
        }  
    }  
    private View.OnClickListener mWifiChangeListener = new View.OnClickListener() {  
        public void onClick(View v) {  
            if(mWifiManager.getWifiState()==WifiManager.WIFI_STATE_DISABLED){  
                mWifiManager.setWifiEnabled(true);  
                handleWifiStateChanged(WifiManager.WIFI_STATE_ENABLED);  
            }else{  
                mWifiManager.setWifiEnabled(false);  
                handleWifiStateChanged(WifiManager.WIFI_STATE_DISABLED);  
            }  
        }  
    };  

<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">
private final BroadcastReceiver mWifiStateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {
handleWifiStateChanged(intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,
mWifiManager.getWifiState()));
}
}
};
private void handleWifiStateChanged(int wifiState) {
switch(wifiState){
case WifiManager.WIFI_STATE_DISABLED:
mWifiImg.setBackgroundResource(R.drawable.switch_wifi_off);
mWifiText.setText(R.string.switch_wifi_text_off);
mWifiInd.setBackgroundResource(R.drawable.switch_ind_off);
break;
case WifiManager.WIFI_STATE_DISABLING:
mWifiImg.setBackgroundResource(R.drawable.switch_wifi_on);
mWifiText.setText(R.string.switch_wifi_text_closing);
mWifiInd.setBackgroundResource(R.drawable.switch_ind_on);
break;
case WifiManager.WIFI_STATE_ENABLED:
mWifiImg.setBackgroundResource(R.drawable.switch_wifi_on);
mWifiText.setText(R.string.switch_wifi_text_on);
mWifiInd.setBackgroundResource(R.drawable.switch_ind_on);
break;
case WifiManager.WIFI_STATE_ENABLING:
mWifiImg.setBackgroundResource(R.drawable.switch_wifi_off);
mWifiText.setText(R.string.switch_wifi_text_opening);
mWifiInd.setBackgroundResource(R.drawable.switch_ind_off);
break;
case WifiManager.WIFI_STATE_UNKNOWN:
mWifiImg.setBackgroundResource(R.drawable.switch_wifi_off);
mWifiText.setText(R.string.switch_wifi_text_off);
mWifiInd.setBackgroundResource(R.drawable.switch_wifi_off);
break;
}
}
private View.OnClickListener mWifiChangeListener = new View.OnClickListener() {
public void onClick(View v) {
if(mWifiManager.getWifiState()==WifiManager.WIFI_STATE_DISABLED){
mWifiManager.setWifiEnabled(true);
handleWifiStateChanged(WifiManager.WIFI_STATE_ENABLED);
}else{
mWifiManager.setWifiEnabled(false);
handleWifiStateChanged(WifiManager.WIFI_STATE_DISABLED);
}
}
};

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</pre>在strings.xml文件里添加  

</pre>在strings.xml文件里添加

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">    <string name="switch_wifi_text_on">wifi</string>  
    <string name="switch_wifi_text_off">wifi</string>  
    <string name="switch_wifi_text_opening">opening</string>  
    <string name="switch_wifi_text_closing">closing</string>  

<pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="html" name="code">	<string
name="switch_wifi_text_on">wifi</string>
<string name="switch_wifi_text_off">wifi</string>
<string name="switch_wifi_text_opening">opening</string>
<string name="switch_wifi_text_closing">closing</string>

就这样一个wifi的控制开关就完成了。因为是在家里写的，所以完整的代码无法打出来，就当给大家点提示吧。

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wifi的源文件可以参考：<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">   

wifi的源文件可以参考：<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code"> 

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platform\packages\apps\Settings\src\com\android\settings\wifi  

platform\packages\apps\Settings\src\com\android\settings\wifi

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</pre>在widget里已经有一个范例了，大家可以参考里面的广播。  

</pre>在widget里已经有一个范例了，大家可以参考里面的广播。

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">platform\packages\apps\Settings\src\com\android\settings\widget\SettingsAppWidgetProvider.java  

<pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="html"
name="code">platform\packages\apps\Settings\src\com\android\settings\widget\SettingsAppWidgetProvider.java

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public void onReceive(Context context, Intent intent) {  
        super.onReceive(context, intent);  
        String action = intent.getAction();  
        if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) {  
            sWifiState.onActualStateChange(context, intent);  
        } else if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)) {  
            sBluetoothState.onActualStateChange(context, intent);  
        } else if (LocationManager.PROVIDERS_CHANGED_ACTION.equals(action)) {  
            sGpsState.onActualStateChange(context, intent);  
        } else if (SyncStorageEngine.SYNC_CONNECTION_SETTING_CHANGED_INTENT.getAction()  
                .equals(action)) {  
            sSyncState.onActualStateChange(context, intent);  
        } else if (intent.hasCategory(Intent.CATEGORY_ALTERNATIVE)) {  
            Uri data = intent.getData();  
            int buttonId = Integer.parseInt(data.getSchemeSpecificPart());  
            if (buttonId == BUTTON_WIFI) {  
                sWifiState.toggleState(context);  
            } else if (buttonId == BUTTON_BRIGHTNESS) {  
                toggleBrightness(context);  
            } else if (buttonId == BUTTON_SYNC) {  
                sSyncState.toggleState(context);  
            } else if (buttonId == BUTTON_GPS) {  
                sGpsState.toggleState(context);  
            } else if (buttonId == BUTTON_BLUETOOTH) {  
                sBluetoothState.toggleState(context);  
            }  
        } else {  
            // Don't fall-through to updating the widget.  The Intent  
            // was something unrelated or that our super class took  
            // care of.  
            return;  
        }  
  
        // State changes fall through  
        updateWidget(context);  
    }  

public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
String action = intent.getAction();
if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) {
sWifiState.onActualStateChange(context, intent);
} else if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)) {
sBluetoothState.onActualStateChange(context, intent);
} else if (LocationManager.PROVIDERS_CHANGED_ACTION.equals(action)) {
sGpsState.onActualStateChange(context, intent);
} else if (SyncStorageEngine.SYNC_CONNECTION_SETTING_CHANGED_INTENT.getAction()
.equals(action)) {
sSyncState.onActualStateChange(context, intent);
} else if (intent.hasCategory(Intent.CATEGORY_ALTERNATIVE)) {
Uri data = intent.getData();
int buttonId = Integer.parseInt(data.getSchemeSpecificPart());
if (buttonId == BUTTON_WIFI) {
sWifiState.toggleState(context);
} else if (buttonId == BUTTON_BRIGHTNESS) {
toggleBrightness(context);
} else if (buttonId == BUTTON_SYNC) {
sSyncState.toggleState(context);
} else if (buttonId == BUTTON_GPS) {
sGpsState.toggleState(context);
} else if (buttonId == BUTTON_BLUETOOTH) {
sBluetoothState.toggleState(context);
}
} else {
// Don't fall-through to updating the widget.  The Intent
// was something unrelated or that our super class took
// care of.
return;
}

// State changes fall through
updateWidget(context);
}

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</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">bluetooth也是一样的注册广播，监听变化。  

</pre><pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="html" name="code">bluetooth也是一样的注册广播，监听变化。

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BluetoothAdapter，主要是这个类的相关应用。  

BluetoothAdapter，主要是这个类的相关应用。

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">    private void handleStateChanged(int state) {  
        switch (state) {  
            case BluetoothAdapter.STATE_TURNING_ON:  
                mCheckBox.setSummary(R.string.wifi_starting);  
                mCheckBox.setEnabled(false);  
                break;  
            case BluetoothAdapter.STATE_ON:  
                mCheckBox.setChecked(true);  
                mCheckBox.setSummary(null);  
                mCheckBox.setEnabled(true);  
                break;  
            case BluetoothAdapter.STATE_TURNING_OFF:  
                mCheckBox.setSummary(R.string.wifi_stopping);  
                mCheckBox.setEnabled(false);  
                break;  
            case BluetoothAdapter.STATE_OFF:  
                mCheckBox.setChecked(false);  
                mCheckBox.setSummary(mOriginalSummary);  
                mCheckBox.setEnabled(true);  
                break;  
            default:  
                mCheckBox.setChecked(false);  
                mCheckBox.setSummary(R.string.wifi_error);  
                mCheckBox.setEnabled(true);  
        }  
    }  

<pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="java" name="code">    private void handleStateChanged(int
state) {
switch (state) {
case BluetoothAdapter.STATE_TURNING_ON:
mCheckBox.setSummary(R.string.wifi_starting);
mCheckBox.setEnabled(false);
break;
case BluetoothAdapter.STATE_ON:
mCheckBox.setChecked(true);
mCheckBox.setSummary(null);
mCheckBox.setEnabled(true);
break;
case BluetoothAdapter.STATE_TURNING_OFF:
mCheckBox.setSummary(R.string.wifi_stopping);
mCheckBox.setEnabled(false);
break;
case BluetoothAdapter.STATE_OFF:
mCheckBox.setChecked(false);
mCheckBox.setSummary(mOriginalSummary);
mCheckBox.setEnabled(true);
break;
default:
mCheckBox.setChecked(false);
mCheckBox.setSummary(R.string.wifi_error);
mCheckBox.setEnabled(true);
}
}

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private final BroadcastReceiver mReceiver = new BroadcastReceiver() {  
    @Override  
    public void onReceive(Context context, Intent intent) {  
        handleBluetoothStateChanged(intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, mBluetoothAdapter.getState()););  
    }  
};  

private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
handleBluetoothStateChanged(intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, mBluetoothAdapter.getState()););
}
};

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</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">GPS则是监听数据库里的开关变化  

</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">GPS则是监听数据库里的开关变化

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参考写法：  

参考写法：

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<span style="font-family:monospace;BACKGROUND-COLOR: rgb(240,240,240); WHITE-SPACE: pre"></span>   

<span style="font-family:monospace;BACKGROUND-COLOR: rgb(240,240,240); WHITE-SPACE: pre"></span> 

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platform\packages\apps\Settings\src\com\android\settings\widget\SettingsAppWidgetProvider.java  

platform\packages\apps\Settings\src\com\android\settings\widget\SettingsAppWidgetProvider.java

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</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code"><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code"> private static final class GpsStateTracker extends StateTracker {  
        public int getButtonId() { return R.id.img_gps; }  
        public int getIndicatorId() { return R.id.ind_gps; }  
        public int getButtonImageId(boolean on) {  
            return on ? R.drawable.ic_appwidget_settings_gps_on  
                    : R.drawable.ic_appwidget_settings_gps_off;  
        }  
  
        @Override  
        public int getActualState(Context context) {  
            ContentResolver resolver = context.getContentResolver();  
            boolean on = Settings.Secure.isLocationProviderEnabled(  
                resolver, LocationManager.GPS_PROVIDER);  
            return on ? STATE_ENABLED : STATE_DISABLED;  
        }  
  
        @Override  
        public void onActualStateChange(Context context, Intent unused) {  
            // Note: the broadcast location providers changed intent  
            // doesn't include an extras bundles saying what the new value is.  
            setCurrentState(context, getActualState(context));  
        }  
  
        @Override  
        public void requestStateChange(final Context context, final boolean desiredState) {  
            final ContentResolver resolver = context.getContentResolver();  
            new AsyncTask<Void, Void, Boolean>() {  
                @Override  
                protected Boolean doInBackground(Void... args) {  
                    Settings.Secure.setLocationProviderEnabled(  
                        resolver,  
                        LocationManager.GPS_PROVIDER,  
                        desiredState);  
                    return desiredState;  
                }  
  
                @Override  
                protected void onPostExecute(Boolean result) {  
                    setCurrentState(  
                        context,  
                        result ? STATE_ENABLED : STATE_DISABLED);  
                    updateWidget(context);  
                }  
            }.execute();  
        }  
    }  

</pre><pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="html" name="code"><pre style="BACKGROUND-COLOR:
rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code"> private
static final class GpsStateTracker extends StateTracker {
public int getButtonId() { return R.id.img_gps; }
public int getIndicatorId() { return R.id.ind_gps; }
public int getButtonImageId(boolean on) {
return on ? R.drawable.ic_appwidget_settings_gps_on
: R.drawable.ic_appwidget_settings_gps_off;
}

@Override
public int getActualState(Context context) {
ContentResolver resolver = context.getContentResolver();
boolean on = Settings.Secure.isLocationProviderEnabled(
resolver, LocationManager.GPS_PROVIDER);
return on ? STATE_ENABLED : STATE_DISABLED;
}

@Override
public void onActualStateChange(Context context, Intent unused) {
// Note: the broadcast location providers changed intent
// doesn't include an extras bundles saying what the new
value is.
setCurrentState(context, getActualState(context));
}

@Override
public void requestStateChange(final Context context, final
boolean desiredState) {
final ContentResolver resolver =
context.getContentResolver();
new AsyncTask<Void, Void, Boolean>() {
@Override
protected Boolean doInBackground(Void... args) {
Settings.Secure.setLocationProviderEnabled(
resolver,
LocationManager.GPS_PROVIDER,
desiredState);
return desiredState;
}

@Override
protected void onPostExecute(Boolean result) {
setCurrentState(
context,
result ? STATE_ENABLED : STATE_DISABLED);
updateWidget(context);
}
}.execute();
}
}

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sound则是参考  

sound则是参考

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platform\packages\apps\Settings\src\com\android\settings\SoundSettings.java  

platform\packages\apps\Settings\src\com\android\settings\SoundSettings.java

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</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">   

</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code"> 

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private BroadcastReceiver mReceiver = new BroadcastReceiver() {  
    @Override  
    public void onReceive(Context context, Intent intent) {  
        if (intent.getAction().equals(AudioManager.RINGER_MODE_CHANGED_ACTION)) {  
            updateState(false);  
        }  
    }  
};  

private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(AudioManager.RINGER_MODE_CHANGED_ACTION)) {
updateState(false);
}
}
};

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view plainprint?IntentFilter filter = new IntentFilter(AudioManager.RINGER_MODE_CHANGED_ACTION);  
registerReceiver(mReceiver, filter);  

IntentFilter filter = new IntentFilter(AudioManager.RINGER_MODE_CHANGED_ACTION);
registerReceiver(mReceiver, filter);

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">  

<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">

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</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">  

</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">

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自动选择则是参考：  

自动选择则是参考：

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platform\packages\apps\Settings\src\com\android\settings\DisplaySettings.java  

platform\packages\apps\Settings\src\com\android\settings\DisplaySettings.java

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</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code"><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {  
        if (preference == mAccelerometer) {  

</pre><pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="html" name="code"><pre style="BACKGROUND-COLOR:
rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
Preference preference) {
if (preference == mAccelerometer) {

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">//设置数据库里自动选择的开关，1为开，0为关  

<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">//设置数据库里自动选择的开关，1为开，0为关

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<pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="java" name="code">            Settings.System.putInt(getContentResolver(),  
                    Settings.System.ACCELEROMETER_ROTATION,  
                    mAccelerometer.isChecked() ? 1 : 0);  
        }  
        return true;  
    }  

<pre
style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px"
class="java" name="code">
Settings.System.putInt(getContentResolver(),
Settings.System.ACCELEROMETER_ROTATION,
mAccelerometer.isChecked() ? 1 : 0);
}
return true;
}

写一个类继承于ContentResolver，用于监听数据库里的变化，然后即可。

以上代码皆可在android源码里找到相关资源，欢迎大家互相讨论。

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</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">  

</pre><pre style="BACKGROUND-COLOR: rgb(240,240,240); MARGIN: 4px 0px" class="html" name="code">

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</pre><br /><p></p><p></p><p></p>