Android AccessibilityService无障碍服务（二）
- 当服务未开启时，快速的跳转到开启服务的界面。
if (!OpenAccessibilitySettingHelper.isAccessibilitySettingsOn(this,
AccessibilitySampleService.class.getName())){// 判断服务是否开启
OpenAccessibilitySettingHelper.jumpToSettingPage(this);// 跳转到开启页面
}else {
Toast.makeText(this, "服务已开启", Toast.LENGTH_SHORT).show();
}
用到的方法具体实现：
/**
* 开启无障碍服务帮助类
* Created by mazaiting on 2017/8/18.
*/
public class OpenAccessibilitySettingHelper {
/**
* 跳转到无障碍服务设置页面
* @param context 设备上下文
*/
public static void jumpToSettingPage(Context context){
Intent intent = new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
/**
* 判断是否有辅助功能权限
* @return true 已开启
* false 未开启
*/
public static boolean isAccessibilitySettingsOn(Context context,String className){
if (context == null){
return false;
}
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningServiceInfo> runningServices =
activityManager.getRunningServices(100);// 获取正在运行的服务列表
if (runningServices.size()<0){
return false;
}
for (int i=0;i<runningServices.size();i++){
ComponentName service = runningServices.get(i).service;
if (service.getClassName().equals(className)){
return true;
}
}
return false;
}
}
2.模拟点击，创建模拟点击的Activity为AccessibilityNormalSampleActivity，并在AndroidManifest.xml将AccessibilityNormalSampleActivity与AccessibilitySampleService配置在同一个进程，若不在同一进程，则获取到的AccessibilityService与AccessibilityEvent为空。
android:process=":BackgroundService"
配置文件为：
<!-- 注册辅助功能服务 -->
<service
android:name=".service.AccessibilitySampleService"
android:enabled="true"
android:exported="true"
android:label="@string/accessibility_tip"
android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE"
android:process=":BackgroundService">
<!-- android:label="@string/accessibility_tip" 在设置中显示的文字 -->
<intent-filter>
<action android:name="android.accessibilityservice.AccessibilityService" />
</intent-filter>
<!-- 通过xml文件完成辅助功能相关配置，也可以在onServiceConnected中动态配置 -->
<meta-data
android:name="android.accessibilityservice"
android:resource="@xml/accessibility_config" />
</service>
<activity android:name=".ui.AccessibilityNormalSampleActivity"
android:process=":BackgroundService"></activity>
AccessibilityNormalSampleActivity界面布局：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/activity_accessibility_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical">
<CheckBox
android:id="@+id/normal_sample_checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="复选框开关"/>
<RadioButton
android:id="@+id/normal_sample_radiobutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="单选按钮"/>
<ToggleButton
android:id="@+id/normal_sample_togglebutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"/>
<Button
android:id="@+id/normal_sample_back"
android:layout_marginTop="20dp"
android:text="退出本页面"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
3.创建一个单例类来控制模拟点击AccessibilityOperator。
/**
* 控制无障碍服务
* Created by mazaiting on 2017/8/18.
*/
public class AccessibilityOperator {
private static final String TAG = "AccessibilityOperator";
private static AccessibilityOperator mInstance;
private AccessibilityOperator(){}
public static AccessibilityOperator getInstance() {
if (mInstance == null){
synchronized (AccessibilityOperator.class){
if (mInstance == null){
mInstance = new AccessibilityOperator();
}
}
}
return mInstance;
}
}
- 创建一个用来模拟点击的界面
在要点击的Activity中创建一个Handler来执行延时消息，创建AccessibilityOperator对象，在onCreate方法中获取单例对象。
private Handler mHandler = new Handler(Looper.getMainLooper());
private AccessibilityOperator accessibilityOperator;
@Override protected void onCreate(Bundle savedInstanceState) {
.....// 省略布局填充
accessibilityOperator = AccessibilityOperator.getInstance();
}
并在onResume方法中进行模拟点击。此处只是调用AccessibilityOperator中的方法，因此直接贴代码：
@Override protected void onResume() {
super.onResume();
// 执行延时任务
clickText();
}
/**
* 按文本点击
*/
private void clickText() {
clickTextItem("复选框",1);
clickTextItem("单选按钮",2);
clickTextItem("关闭",3);
clickTextItem("退出本页面",4);
}
/**
* 文本单个延时点击
* @param text 文本内容
* @param num 延时倍数
*/
private void clickTextItem(final String text,int num) {
mHandler.postDelayed(new Runnable() {
@Override public void run() {
final boolean isSuccess = accessibilityOperator.clickText(text);
runOnUiThread(new Runnable() {
@Override public void run() {
popToast(isSuccess, text);
}
});
}
},2000*num);
}
/**
* 弹出吐司
* @param isSuccess
* @param msg
*/
private void popToast(boolean isSuccess, String msg) {
if (isSuccess) {
Toast.makeText(this, msg + "点击成功", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, msg + "点击失败", Toast.LENGTH_SHORT).show();
}
}
- 在accessibilityOperator.clickText(text)文本时，系统会先调用AccessibilitySampleService中的onAccessibilityEvent方法，因此在AccessibilityOperator创建一个updateEvent方法，来为AccessibilityService服务与AccessibilityEvent事件赋值。
private AccessibilityService mAccessibilityService;
private AccessibilityEvent mAccessibilityEvent;
/**
* 更新事件
* @param service
* @param event
*/
public void updateEvent(AccessibilityService service, AccessibilityEvent event) {
if (mAccessibilityService == null && service != null){
mAccessibilityService = service;
}
if (event != null){
mAccessibilityEvent = event;
}
}
- 对AccessibilityService与AccessibilityEvent赋值之后就可以正常使用了。clickText方法的完整内容代码：
/**
* 根据Text搜索所有符合条件的节点，模糊搜索方式
* @param text
* @return
*/
public boolean clickText(String text) {
AccessibilityNodeInfo nodeInfo = getRootNodeInfo();
if (nodeInfo!=null){
List<AccessibilityNodeInfo> nodeInfos =
nodeInfo.findAccessibilityNodeInfosByText(text);
return performClick(nodeInfos);
}
return false;
}
/**
* 获取根节点
* @return
*/
private AccessibilityNodeInfo getRootNodeInfo() {
Log.e(TAG, "getRootNodeInfo: ");
AccessibilityEvent curEvent = mAccessibilityEvent;
AccessibilityNodeInfo nodeInfo = null;
if (Build.VERSION.SDK_INT >= 16){
if (mAccessibilityService!=null){
// 获得窗体根节点
nodeInfo = mAccessibilityService.getRootInActiveWindow();
}
}else {
nodeInfo = curEvent.getSource();
}
return nodeInfo;
}
/**
* 模拟点击
* @param nodeInfos
* @return true 成功； false 失败。
*/
private boolean performClick(List<AccessibilityNodeInfo> nodeInfos) {
if (nodeInfos!=null && !nodeInfos.isEmpty()){// 判断是否非空
AccessibilityNodeInfo nodeInfo;
for (int i=0;i<nodeInfos.size();i++){
nodeInfo = nodeInfos.get(i);// 获得要点击的View
// 进行模拟点击
if (nodeInfo.isEnabled()){// 如果可以点击
return nodeInfo.performAction(AccessibilityNodeInfo.ACTION_CLICK);
}
}
}
return false;
}
getRootNodeInfo()返回的AccessibilityNodeInfo可以对它进行遍历，查询它的子节点
AccessibilityNodeInfo nodeInfo = getRootNodeInfo();
if (nodeInfo!=null){
for (int i=0;i<nodeInfo.getChildCount();i++){
AccessibilityNodeInfo child = nodeInfo.getChild(i);
Log.e(TAG, "clickText: "+child.toString());
}
}
