Demo地址：https://github.com/qyxxjd/ClearProcesses

AccessibilityService

1.簡介

public abstract class AccessibilityService extends Service

java.lang.Object
 ? android.content.Context
   ? android.content.ContextWrapper
     ? android.app.Service
       ? android.accessibilityservice.AccessibilityService

無障礙服務(wù)旨在幫助身心有障礙的用戶使用Android設(shè)備和應(yīng)用赴捞。無障礙服務(wù)在后臺(tái)運(yùn)行赦政，當(dāng)無障礙事件被激活時(shí)系統(tǒng)會(huì)執(zhí)行AccessibilityService的onAccessibilityEvent(AccessibilityEvent event)方法昼钻。這些事件表示在用戶界面中的一些狀態(tài)的改變然评，例如：焦點(diǎn)的改變碗淌、按鈕被點(diǎn)擊等。這類服務(wù)可以有選擇性地請(qǐng)求查詢活動(dòng)窗口的內(nèi)容碎罚。無障礙服務(wù)的開發(fā)需要繼承AccessibilityService和實(shí)現(xiàn)它的抽象方法纳像。

2.使用

public class YourService extends AccessibilityService {
    @Override public void onAccessibilityEvent(final AccessibilityEvent event) {
        //TODO ...
    }
    @Override public void onInterrupt() { 
        //TODO ...
    }
}

在onAccessibilityEvent方法中，通過AccessibilityEvent的getSource方法獲取AccessibilityNodeInfoUI節(jié)點(diǎn)信息

AccessibilityNodeInfo nodeInfo = event.getSource();

通過AccessibilityNodeInfo的findAccessibilityNodeInfosByText 憔购、
findAccessibilityNodeInfosByViewId方法獲取你感興趣的UI子節(jié)點(diǎn)信息

List<AccessibilityNodeInfo> nodeInfoList = event.getSource().findAccessibilityNodeInfosByText("強(qiáng)行停止");

通過AccessibilityNodeInfo的performAction方法來模擬用戶點(diǎn)擊事件

nodeInfo.performAction(AccessibilityNodeInfo.ACTION_CLICK);

使用AccessibilityService之前需要判斷一下當(dāng)前是否已經(jīng)授權(quán)

private boolean checkEnabledAccessibilityService() {
    List<AccessibilityServiceInfo> accessibilityServices =
            mAccessibilityManager.getEnabledAccessibilityServiceList(AccessibilityServiceInfo.FEEDBACK_GENERIC);
    for (AccessibilityServiceInfo info : accessibilityServices) {
        if (info.getId().equals(SERVICE_NAME)) {
            return true;
        }
    }
    return false;
}

如果沒有授權(quán)玫鸟，需要到系統(tǒng)設(shè)置頁面進(jìn)行設(shè)置

Intent intent = new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS);
startActivity(intent);

3.屬性配置

在資源文件res目錄下新建一個(gè)xml文件夾,創(chuàng)建AccessibilityService配置文件your_config.xml

<?xml version="1.0" encoding="utf-8"?>
<accessibility-service
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:description="@string/app_name"
    android:accessibilityEventTypes="typeWindowStateChanged|typeWindowContentChanged"
    android:packageNames="com.android.settings"
    android:accessibilityFeedbackType="feedbackAllMask"
    android:notificationTimeout="500"
    android:accessibilityFlags="flagDefault"
    android:canRetrieveWindowContent="true"
    />

更多屬性介紹請(qǐng)參考：AccessibilityServiceInfo

4.AndroidManifest配置

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    ... >

    <application ...>
        ...
        <service
            android:name=".YourService"
            android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE"> <-- 需要用到BIND_ACCESSIBILITY_SERVICE這個(gè)權(quán)限 -->
            <intent-filter>
                <-- 有了這個(gè)action肮雨，用戶才能在設(shè)置里面看到我們的服務(wù) -->
                <action android:name="android.accessibilityservice.AccessibilityService"/>
            </intent-filter>
            <meta-data
                android:name="android.accessibilityservice"
                android:resource="@xml/your_config"/>
        </service>
    ...
    </application>

</manifest>

清理后臺(tái)進(jìn)程

1.獲取后臺(tái)進(jìn)程

通過ActivityManager的getRunningAppProcesses和getRunningServices方法獲取后臺(tái)運(yùn)行的應(yīng)用程序怨规、服務(wù)列表

ActivityManager mActivityManager = (ActivityManager) mAppContext.getSystemService(Context.ACTIVITY_SERVICE);
//返回在設(shè)備上運(yùn)行的應(yīng)用程序的進(jìn)程的列表
List<ActivityManager.RunningAppProcessInfo> appProcessInfos = mActivityManager.getRunningAppProcesses();
//返回當(dāng)前正在運(yùn)行的服務(wù)的列表
List<ActivityManager.RunningServiceInfo> serviceInfos = mActivityManager.getRunningServices(yourCount);

2.進(jìn)入應(yīng)用程序詳情頁面

private void showPackageDetail(String packageName){
    Intent intent = new Intent();
    intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
    Uri uri = Uri.fromParts(PACKAGE, packageName, null);
    intent.setData(uri);
    startActivity(intent);
}

3.模擬強(qiáng)行停止操作

@TargetApi(Build.VERSION_CODES.JELLY_BEAN) @Override public void onAccessibilityEvent(final AccessibilityEvent event) {
    if(null == event || null == event.getSource()) { return; }
    if(event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED &&
            event.getPackageName().equals(PACKAGE)){
        final CharSequence className = event.getClassName();
        if(className.equals(NAME_APP_DETAILS)){ //模擬點(diǎn)擊強(qiáng)行停止按鈕
            simulationClick(event, TEXT_FORCE_STOP);
            performGlobalAction(GLOBAL_ACTION_BACK);
        }
        if(className.equals(NAME_ALERT_DIALOG)){ //模擬點(diǎn)擊彈窗的確認(rèn)按鈕
            simulationClick(event, TEXT_DETERMINE);
            performGlobalAction(GLOBAL_ACTION_BACK);
        }
    }
}

@TargetApi(Build.VERSION_CODES.JELLY_BEAN) private void simulationClick(AccessibilityEvent event, String text){
    List<AccessibilityNodeInfo> nodeInfoList = event.getSource().findAccessibilityNodeInfosByText(text);
    for (AccessibilityNodeInfo node : nodeInfoList) {
        if (node.isClickable() && node.isEnabled()) {
            node.performAction(AccessibilityNodeInfo.ACTION_CLICK);
        }
    }
}