Question

我有一个包含2个活动的应用程序。活动A（父级）通过调用以下内容启动活动B（子级）：

startActivityForResult(intentB,B_Request);

活动B是条形码扫描仪。（我使用这个库：com.journeyapps：zxing-android-embedded：3.2.0@aar）。在此活动中，我必须重写onActivityResult（）方法以获取扫描的代码。之后，我想将存储在“代码”中的数据发送回onActivityResult（）的父对象（活动A）。我这样做是这样的：

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
        String code = null;

        if(result != null){
            if(result.getContents() == null){
                return;
            }
            else {
                code = result.getContents();
            }
        }
        else {
            super.onActivityResult(requestCode, resultCode, data);
        }

        Intent intent = new Intent(getApplicationContext(),A.class);
        intent.putExtra("scannedCode", code);
        setResult(RESULT_OK, intent);
        finish();
}

父onActivityResult（）看起来像这样：

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == CAMERA_REQUEST){
            if(resultCode == RESULT_OK){

                String scannedCode = data.getStringExtra("scannedCode");
                toastMessage("Scanned code: " + scannedCode);
            }
        }
    }

我遇到以下异常，我没有看到活动A，而是被重定向到Activitie的A父级。

E/ActivityManager: Failed to schedule configuration change
    android.os.DeadObjectException
        at android.os.BinderProxy.transactNative(Native Method)
        at android.os.BinderProxy.transact(Binder.java:1177)
        at android.app.IApplicationThread$Stub$Proxy.scheduleTransaction(IApplicationThread.java:1815)
        at android.app.servertransaction.ClientTransaction.schedule(ClientTransaction.java:129)
        at com.android.server.am.ClientLifecycleManager.scheduleTransaction(ClientLifecycleManager.java:47)
        at com.android.server.am.ClientLifecycleManager.scheduleTransaction(ClientLifecycleManager.java:100)
        at com.android.server.am.ActivityManagerService.updateGlobalConfigurationLocked(ActivityManagerService.java:24782)
        at com.android.server.am.ActivityManagerService.updateDisplayOverrideConfigurationLocked(ActivityManagerService.java:24902)
        at com.android.server.am.ActivityManagerService.updateDisplayOverrideConfigurationLocked(ActivityManagerService.java:24879)
        at com.android.server.am.ActivityStackSupervisor.ensureVisibilityAndConfig(ActivityStackSupervisor.java:1671)
        at com.android.server.am.ActivityStackSupervisor.realStartActivityLocked(ActivityStackSupervisor.java:1420)
        at com.android.server.am.ActivityStackSupervisor.startSpecificActivityLocked(ActivityStackSupervisor.java:1709)
        at com.android.server.am.ActivityStack.resumeTopActivityInnerLocked(ActivityStack.java:3043)
        at com.android.server.am.ActivityStack.resumeTopActivityUncheckedLocked(ActivityStack.java:2488)
        at com.android.server.am.ActivityStackSupervisor.resumeFocusedStackTopActivityLocked(ActivityStackSupervisor.java:2234)
        at com.android.server.am.ActivityStack.completePauseLocked(ActivityStack.java:1745)
        at com.android.server.am.ActivityStack.activityPausedLocked(ActivityStack.java:1669)
        at com.android.server.am.ActivityManagerService.activityPaused(ActivityManagerService.java:9657)
        at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:224)
        at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3820)
        at android.os.Binder.execTransact(Binder.java:752)

p.s。我在活动B中获取代码还不够，我需要在活动A中返回代码。

您能告诉我我在做什么错吗？

谢谢！

Answer 1

只需放置 new intent（）而不是

新意图（getApplicationContext（），A.class）

在您的孩子活动中

将数据从子活动onActivityResult（）发送到父活动onActivityResult（）

1 个答案: