是的，有可能经过 2 天的调查，我找到了解决方案。
要求：打开系统相机应用并点击图片。
第 1 步：
在清单文件中添加相机权限：
<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature
android:name="android.hardware.camera"
android:required="false" />
<uses-feature
android:name="android.hardware.camera.front"
android:required="false" />
第 2 步： 创建一项扩展 AccessibilityService
的服务
<service
android:name=".AccessTest"
android:enabled="true"
android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE"
android:exported="true">
<intent-filter>
<action android:name="android.accessibilityservice.AccessibilityService" />
</intent-filter>
<meta-data
android:name="android.accessibilityservice"
android:resource="@xml/accessibility_service_config"/>
</service>
第 3 步：在需要时启动服务
Intent mailAccessabilityIntent = new Intent(getApplicationContext(), AccessTest.class);
startService(mailAccessabilityIntent);
第 4 步：添加辅助功能文件。
<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
android:accessibilityEventTypes="typeAllMask"
android:accessibilityFeedbackType="feedbackAllMask"
android:accessibilityFlags="flagEnableAccessibilityVolume"
android:canRetrieveWindowContent="true"
android:notificationTimeout="100"
android:packageNames="com.google.android.GoogleCamera"
android:settingsActivity="com.mobiliya.cameraautoclick.MainActivity" />
第 5 步：编写您要处理与相机相关的侦听器的服务类。
public class AccessTest extends AccessibilityService {
private final static String TAG = "Yogesh";
@Override
public void onCreate() {
super.onCreate();
Log.d("Yogesh","I am started");
}
@Override
protected void onServiceConnected() {
super.onServiceConnected();
Log.d(TAG, "onServiceConnected");
}
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
Log.d(TAG, "ACC::onAccessibilityEvent: " + event.getEventType());
//TYPE_WINDOW_STATE_CHANGED == 32
if (AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED == event
.getEventType()) {
AccessibilityNodeInfo nodeInfo = event.getSource();
if (nodeInfo == null) {
return;
}
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
String x = takePictureIntent.resolveActivity(getPackageManager()).getPackageName();
Log.d("Yogesh","Package name " + x);
List<AccessibilityNodeInfo> list1 = nodeInfo.findAccessibilityNodeInfosByText("Switch to front camera");
for (AccessibilityNodeInfo node : list1) {
Log.i(TAG, "ACC::onAccessibilityEvent: click " + node);
node.performAction(AccessibilityNodeInfo.ACTION_CLICK);
}
final List<AccessibilityNodeInfo> list = nodeInfo.findAccessibilityNodeInfosByText("Take photo");
final android.os.Handler handler = new android.os.Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
for (AccessibilityNodeInfo node : list) {
Log.i(TAG, "ACC::onAccessibilityEvent: click " + node);
node.performAction(AccessibilityNodeInfo.ACTION_CLICK);
}
handler.postDelayed(this,5000);
}
},10000);
for (AccessibilityNodeInfo node : list) {
Log.i(TAG, "ACC::onAccessibilityEvent: click " + node);
node.performAction(AccessibilityNodeInfo.ACTION_CLICK);
}
Log.d(TAG,"Access " + getAllChildNodeText(nodeInfo).toString());
}
}
private List<CharSequence> getAllChildNodeText(AccessibilityNodeInfo infoCompat) {
List<CharSequence> contents = new ArrayList<>();
if (infoCompat == null)
return contents;
if (infoCompat.getContentDescription() != null) {
contents.add(infoCompat.getContentDescription().toString().isEmpty() ? "unlabelled" : infoCompat.getContentDescription());
} else if (infoCompat.getText() != null) {
contents.add(infoCompat.getText().toString().isEmpty() ? "unlabelled" : infoCompat.getText());
} else {
getTextInChildren(infoCompat, contents);
}
if (infoCompat.isClickable()) {
if (infoCompat.getClassName().toString().contains(Button.class.getSimpleName())) {
if (contents.size() == 0) {
contents.add("Unlabelled button");
} else {
contents.add("button");
}
}
contents.add("Double tap to activate");
}
return contents;
}
private void getTextInChildren(AccessibilityNodeInfo nodeInfoCompat, List<CharSequence> contents) {
if (nodeInfoCompat == null)
return;
if (!nodeInfoCompat.isScrollable()) {
if (nodeInfoCompat.getContentDescription() != null) {
contents.add(nodeInfoCompat.getContentDescription());
} else if (nodeInfoCompat.getText() != null) {
contents.add(nodeInfoCompat.getText());
}
if (nodeInfoCompat.getChildCount() > 0) {
for (int i = 0; i < nodeInfoCompat.getChildCount(); i++) {
if (nodeInfoCompat.getChild(i) != null) {
getTextInChildren(nodeInfoCompat.getChild(i), contents);
}
}
}
}
}
@Override
public void onInterrupt() {
}
}
这里getAllChildNodeText()返回所有可点击的文本按钮，谷歌默认应用程序有Take Photo文本所以对于这个视图你可以执行操作。
为每 10 秒捕获一次图片添加了 处理程序，以便更清楚地说明。
如果您想跟踪多个相机应用程序，请删除以下行并使用 Java 代码设置包更多详细信息请参阅 -Accessibility Service
android:packageNames="com.google.android.GoogleCamera"
我上传了工作示例 -> https://github.com/ycrathi/cameraautoclick
注意：在上面的 GitHub repo 中有多个不需要的代码，我试过了。
此解决方案并非适用于所有应用程序。您可以找到一些著名的应用程序，例如 google camera 并查找文本，然后明智地执行点击操作包。