如何用Android无障碍功能自动关闭WhatsApp未注册提示弹窗并返回主应用

一、提前检测手机号是否注册WhatsApp（推荐方案） #

在启动WhatsApp前先校验手机号是否已注册，可以直接避免弹出未注册提示窗口。我们可以通过WhatsApp的网页链接做简单的HTTP校验：

校验方法实现 #

private boolean isWhatsAppRegistered(String phoneNumber) {
    // 格式化手机号：移除特殊字符，确保带国家码（如+86）
    String formattedNumber = phoneNumber.replaceAll("[^0-9]", "");
    if (!formattedNumber.startsWith("+")) {
        formattedNumber = "+" + formattedNumber; // 可根据需求调整默认国家码逻辑
    }

    try {
        URL url = new URL("https://wa.me/" + formattedNumber);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("HEAD");
        connection.setInstanceFollowRedirects(false); // 禁止自动重定向
        int responseCode = connection.getResponseCode();
        
        // 302重定向代表号码已注册（跳转至聊天页面），200代表未注册（显示NotFound页面）
        return responseCode == HttpURLConnection.HTTP_MOVED_TEMP;
    } catch (IOException e) {
        Log.e("WHATSAPP_CHECK", e.toString());
        return false;
    }
}

集成到发送逻辑中 #

修改onItemClick方法，先校验再启动WhatsApp：

numberlist.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
        try {
            String phoneNumber = (String) numberlist.getItemAtPosition(i);
            Toast.makeText(getBaseContext(), phoneNumber, Toast.LENGTH_SHORT).show();
            txtnumber.setText(phoneNumber);

            // 先校验手机号是否注册WhatsApp
            if (isWhatsAppRegistered(phoneNumber)) {
                PackageManager packageManager = MainActivity.this.getPackageManager();
                Intent saif = new Intent(Intent.ACTION_VIEW);
                String message = txtmessage.getText().toString() + suffix.toString();
                // 构造带消息的WhatsApp链接
                String url = "https://wa.me/" + phoneNumber.replaceAll("[^0-9+]", "") + "?text=" + Uri.encode(message);
                saif.setData(Uri.parse(url));
                
                if (saif.resolveActivity(packageManager) != null) {
                    MainActivity.this.startActivityForResult(saif, 1);
                }
            } else {
                Toast.makeText(getApplicationContext(), "该手机号未注册WhatsApp", Toast.LENGTH_LONG).show();
            }
        } catch (Exception e) {
            Log.e("ERROR WHATSAPP", e.toString());
            Toast.makeText(getApplicationContext(), "操作失败", Toast.LENGTH_LONG).show();
        }
    }
});

注意：需要在AndroidManifest.xml中添加网络权限：

<uses-permission android:name="android.permission.INTERNET" />

二、通过无障碍服务自动关闭未注册提示弹窗 #

如果提前校验失败仍出现弹窗，可通过无障碍服务检测并自动点击关闭按钮：

更新无障碍服务逻辑 #

在onAccessibilityEvent方法中添加弹窗处理逻辑：

@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
    AccessibilityNodeInfoCompat rootInActiveWindow = AccessibilityNodeInfoCompat.wrap(getRootInActiveWindow());
    if (rootInActiveWindow == null) return;

    // 处理WhatsApp未注册提示弹窗
    if (event.getPackageName().equals("com.whatsapp") && event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
        // 查找弹窗中的OK/Cancel按钮（根据设备语言调整文本，比如中文为"确定"/"取消"）
        List<AccessibilityNodeInfoCompat> okButtons = rootInActiveWindow.findAccessibilityNodeInfosByText("OK");
        List<AccessibilityNodeInfoCompat> cancelButtons = rootInActiveWindow.findAccessibilityNodeInfosByText("Cancel");

        // 优先点击OK关闭弹窗，再返回主应用
        if (!okButtons.isEmpty()) {
            okButtons.get(0).performAction(AccessibilityNodeInfo.ACTION_CLICK);
            performGlobalAction(GLOBAL_ACTION_BACK);
        } else if (!cancelButtons.isEmpty()) {
            cancelButtons.get(0).performAction(AccessibilityNodeInfo.ACTION_CLICK);
            performGlobalAction(GLOBAL_ACTION_BACK);
        }
    }

    // 保留原有逻辑
    String actname = event.getClassName().toString();
    List<AccessibilityNodeInfoCompat> sendMessageNodeInfoList = new ArrayList<>();

    switch (actname) {
        case "com.whatsapp.Conversation":
            sendMessageNodeInfoList = rootInActiveWindow.findAccessibilityNodeInfosByViewId("com.whatsapp:id/send");
            if (!sendMessageNodeInfoList.isEmpty()) {
                sendMessageNodeInfoList.get(0).performAction(AccessibilityNodeInfo.ACTION_CLICK);
            }
            break;
        case "com.whatsapp.HomeActivity":
            sendNext();
            break;
        case "com.whatsapp.contact.picker.ContactPicker":
            Toast.makeText(this, "无法找到联系人，跳过！", Toast.LENGTH_SHORT).show();
            performGlobalAction(GLOBAL_ACTION_BACK);
            break;
    }

    if (!sendMessageNodeInfoList.isEmpty()) {
        AccessibilityNodeInfoCompat sendMessageButton = sendMessageNodeInfoList.get(0);
        if (sendMessageButton.isVisibleToUser()) {
            sendMessageButton.performAction(AccessibilityNodeInfo.ACTION_CLICK);
        }
        sendMessageButton.recycle();
    }

    rootInActiveWindow.recycle();
}

注意：确保无障碍服务已在系统设置中启用，且Manifest中服务声明正确。

内容的提问来源于stack exchange，提问作者Maria