android - 如何在android中的自定义对话框中隐藏包含布局

Question

我在 <include> 下有两个布局我想躲在 radio button 上检查。

我的 XML 代码

<LinearLayout
        android:id="@+id/maid_full_emp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >
        <include
            layout="@layout/maid_full_emp"

            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:visibility="gone"
            tools:layout_editor_absoluteY="8dp"
            tools:layout_editor_absoluteX="8dp" />
        </LinearLayout>
    <LinearLayout
        android:id="@+id/maid_part_emp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >
        <include
            layout="@layout/maid_part_emp"

            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            tools:layout_editor_absoluteY="8dp"
            tools:layout_editor_absoluteX="8dp" />
    </LinearLayout>

Custom dialog code

Logcat output

FATAL EXCEPTION: main
    Process: aminfocraft.harsh.mymaidfinder, PID: 29548
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.LinearLayout.setVisibility(int)' on a null object reference
        at aminfocraft.harsh.mymaidfinder.Activity.MaidSearchEmpPak.MaidSearchEmpNew.onCheckedChanged(MaidSearchEmpNew.java:429)
        at android.widget.CompoundButton.setChecked(CompoundButton.java:165)
        at aminfocraft.harsh.mymaidfinder.Activity.MaidSearchEmpPak.MaidSearchEmpNew.assignViews1(MaidSearchEmpNew.java:370)
        at aminfocraft.harsh.mymaidfinder.Activity.MaidSearchEmpPak.MaidSearchEmpNew.searchUser(MaidSearchEmpNew.java:386)
        at aminfocraft.harsh.mymaidfinder.Activity.MaidSearchEmpPak.MaidSearchEmpNew.onOptionsItemSelected(MaidSearchEmpNew.java:296)
        at android.app.Activity.onMenuItemSelected(Activity.java:3219)
        at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:380)
        at android.support.v7.app.AppCompatActivity.onMenuItemSelected(AppCompatActivity.java:195)

Answer 1

使用 R.id 而不是 R.layout

maid_full_emp = (LinearLayout )dialog.findViewById(R.id.maid_full_emp);
maid_part_emp = (LinearLayout )dialog.findViewById(R.id.maid_part_emp);

代替

maid_full_emp = (LinearLayout )dialog.findViewById(R.layout.maid_full_emp);
 maid_part_emp = (LinearLayout )dialog.findViewById(R.layout.maid_part_emp);