Question

我有一个类来创建对话框和编码以从中获取值。它适用于一个人。当我第二次尝试调用对话框时，它会传递以下错误消息。

public class DriverUpdateStatus extends DialogFragment {
    private static DriverUpdateStatus driverUpdateStatus;
    private Context context;
    private View view;

    public static DriverUpdateStatus newInstance(Context context) {

        if (driverUpdateStatus == null) {
            driverUpdateStatus = new DriverUpdateStatus();
            driverUpdateStatus.view = LayoutInflater.from(context).inflate(R.layout.dialog_driver_update_status, null);
        }
        driverUpdateStatus.context = context;
        return driverUpdateStatus;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        return new AlertDialog.Builder(context)
                .setTitle("SELECT_STATE")
                .setView(this.view)
                .setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dismiss();
                    }
                })
                .create();
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"

        android:orientation="horizontal">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <ImageButton
                android:id="@+id/im_off_duty"
                android:layout_width="100dp"
                android:layout_height="100dp"
                android:backgroundTint="@color/cardview_light_background"
                android:src="@drawable/ic_power_settings_new_black_24dp" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="Off Duty" />
        </LinearLayout>


        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:orientation="vertical">

            <ImageButton
                android:id="@+id/im_on_duty"
                android:layout_width="100dp"
                android:layout_height="100dp"
                android:backgroundTint="@color/cardview_light_background"
                android:src="@drawable/ic_check_circle_black_24dp" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="On Duty" />
        </LinearLayout>
    </LinearLayout>


    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:orientation="vertical">

            <ImageButton
                android:id="@+id/im_sleeper"
                android:layout_width="100dp"
                android:layout_height="100dp"
                android:backgroundTint="@color/cardview_light_background"

                android:src="@drawable/ic_airline_seat_individual_suite_black_24dp" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="Sleeper" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"

            android:orientation="vertical">

            <ImageButton
                android:id="@+id/im_driving"
                android:layout_width="100dp"
                android:layout_height="100dp"
                android:backgroundTint="@color/cardview_light_background"

                android:src="@drawable/ic_do_not_disturb_on_black_24dp" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="Driving" />
        </LinearLayout>
    </LinearLayout>

处理：com.jackfruitsystems.fleetoperate，PID：4759 java.lang.IllegalStateException：指定的子节点已经有了家长。您必须首先在孩子的父母上调用removeView（）。在android.view.ViewGroup.addViewInner（ViewGroup.java:4310）在android.view.ViewGroup.addView（ViewGroup.java:4146）在android.view.ViewGroup.addView（ViewGroup.java:4118）在 com.android.internal.app.AlertController.setupCustomContent（AlertController.java:585）在 com.android.internal.app.AlertController.setupView（AlertController.java:496）在 com.android.internal.app.AlertController.installContent（AlertController.java:234）在android.app.AlertDialog.onCreate（AlertDialog.java:423）在android.app.Dialog.dispatchOnCreate（Dialog.java:394）在android.app.Dialog.show（Dialog.java:295）在android.app.DialogFragment.onStart（DialogFragment.java:499）在android.app.Fragment.performStart（Fragment.java:2244）在 android.app.FragmentManagerImpl.moveToState（FragmentManager.java:1002）在 android.app.FragmentManagerImpl.moveToState（FragmentManager.java:1148）在android.app.BackStackRecord.run（BackStackRecord.java:793）在 android.app.FragmentManagerImpl.execPendingActions（FragmentManager.java:1535）在android.app.FragmentManagerImpl $ 1.run（FragmentManager.java:482）在android.os.Handler.handleCallback（Handler.java:739）在android.os.Handler.dispatchMessage（Handler.java:95）在android.os.Looper.loop（Looper.java:148）在android.app.ActivityThread.main（ActivityThread.java:5417） at java.lang.reflect.Method.invoke（Native Method）在 com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:726）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:616）

Answer 1

//if (driverUpdateStatus == null) {
        driverUpdateStatus = new DriverUpdateStatus();
        driverUpdateStatus.view = LayoutInflater.from(context).inflate(R.layout.dialog_driver_update_status, null);
//}

始终使用新视图，或在使用时从其父视图中删除。

Answer 2

您将布局中存在的视图再次放在此行.setView(this.view)

指定的子项已有父项。你必须调用removeView（）

2 个答案: