keyguardManager.createConfirmDeviceCredentialIntent()返回RESULT_CANCELEDon Android q
keyguardManager.createConfirmDeviceCredentialIntent()返回RESULT_CANCELEDon Android q
提问于 2019-11-11 08:56:42
我有一个应用程序，在该应用程序中，我请求用户使用KeyguardManager通过PIN在应用程序中进行身份验证。
重要的是，我在清单中对我的活动有android:showOnLockScreen="true"，所以当设备被锁定时，我的活动显示，我点击“登录”按钮，这个按钮调用showAuthenticationScreen()，我在onActivityResult()中接收RESULT_CANCELED。
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void showAuthenticationScreen() {
KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
if (keyguardManager == null) {
return;
}
Intent kgIntent = keyguardManager.createConfirmDeviceCredentialIntent(getString(R.string.nnl_kg_title), getKgPrompt());
if (kgIntent != null) {
startActivityForResult(kgIntent, KG_REQUEST_ID);
}
}我查看了系统日志，发现我从BiometricService获得了这个错误，并收到了“取消疾病控制中心”的消息。以下是系统日志的某些部分。
936 936 I ActivityTaskManager: START u0 {act=android.app.action.CONFIRM_DEVICE_CREDENTIAL_WITH_USER flg=0x8080000 pkg=com.android.settings cmp=com.android.settings/.password.ConfirmDeviceCredentialActivity$InternalActivity (has extras)} from
uid 1000
11-11 10:54:53.076 936 972 D ActivityTaskManager: Top Process State changed to PROCESS_STATE_TOP_SLEEPING
11-11 10:54:53.092 936 1032 W ProcessStats: Tracking association SourceState{2c15fa1 com.android.settings/1000 Top #565108} whose proc state 1 is better than process ProcessState{54a9784 com.google.android.gms.persistent/10029 pkg=com.google.android.gms} proc st
ate 2 (9 skipped)
11-11 10:54:53.126 936 936 D BiometricService: Creating auth session. Modality: 1, cookie: 1632337634
11-11 10:54:53.127 936 936 V FingerprintService: startAuthentication(com.android.settings)
11-11 10:54:53.128 936 936 V FingerprintService: Returning cookie: 1632337634
11-11 10:54:53.128 936 936 D BiometricService: Matched cookie: 1632337634, 0 remaining
11-11 10:54:53.128 936 936 V FingerprintService: starting client AuthenticationClientImpl(com.android.settings) cookie: 1632337634/1632337634
11-11 10:54:53.135 936 936 W FingerprintService: client com.android.settings is authenticating...
11-11 10:54:53.161 936 936 D BiometricService: Cancelling from CDC
11-11 10:54:53.162 936 936 V FingerprintService: Stopping client com.android.settings, fromClient: false
11-11 10:54:53.173 936 936 W FingerprintService: client com.android.settings is no longer authenticating
11-11 10:54:53.177 936 3056 D ActivityTaskManager: Top Process State changed to PROCESS_STATE_TOP
11-11 10:54:53.195 936 936 V FingerprintService: handleError(client=com.android.settings, error = 5)
11-11 10:54:53.195 936 936 V FingerprintService: Done with client: com.android.settings
11-11 10:54:53.196 936 936 D BiometricService: Error: 5 cookie: 1632337634
11-11 10:54:53.285 936 3041 I ActivityTaskManager: Activity reported stop, but no longer stopping: ActivityRecord{9b6d8b u0 com.natigbabayev.biometricprompt/.MainActivity t1936}这有什么解决办法吗？即使设备被锁定，我仍然可以要求用户使用PIN进行身份验证吗？提前谢谢你们。
回答 1
Stack Overflow用户
发布于 2021-02-15 05:13:39
您从未在当前活动中使用此函数- onActivityResult(int requestCode, int resultCode, Intent data)。
它用于处理来自活动的返回值，该活动将结果代码返回到当前活动中。
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == KG_REQUEST_ID){
if(resultCode == Activity.RESULT_OK) {
// Your Code if Authenticated Successfully.
}
if(resultCode == Activity.RESULT_CANCELED) {
// Your Code If Canceled.
}
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/58798205
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