我正在尝试将linearlayout 2 [＆＃34; secondrow＆＃34;]添加到linearlayout 1 [＆＃34; firstrow＆＃34;]但是它会引发异常 指定的子项已经是父项，您必须首先在子父项上调用removeview（）。linearlayout1，linearlayout 2，linearlayout 3，linearlayout 4每个都有4个按钮。我的java代码在下面
---------------------------- Java code ----------------- ---------
private LinearLayout linearfirstRow;
private LinearLayout linearsecondRow;
private LinearLayout linearthirdRow;
private LinearLayout linearfourthRow;
private LinearLayout TemporaryLayout;
linearfirstRow=(LinearLayout)findViewById(R.id.firstrow);
linearsecondRow=(LinearLayout)findViewById(R.id.secondrow);
linearthirdRow=(LinearLayout)findViewById(R.id.thirdrow);
linearfourthRow=(LinearLayout)findViewById(R.id.fourththrow);
TemporaryLayout=linearsecondRow;
linearfirstRow.removeAllViews();
linearsecondRow.removeAllViews();
Throws error ---> linearfirstRow.addView(TemporaryLayout);
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<LinearLayout
firstrow--> android:id="@+id/firstrow"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="25"
>
<Button
android:id="@+id/btn1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="1"
android:layout_weight="1" />
<Button
android:id="@+id/btn2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="1"
android:layout_weight="1" />
<Button
android:id="@+id/btn3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="1"
android:layout_weight="1" />
<Button
android:id="@+id/btn4"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="1"
android:layout_weight="1" />
</LinearLayout>
secondrow--> <LinearLayout
android:id="@+id/secondrow"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="25"
>
<Button
android:id="@+id/btn5"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="2"
android:layout_weight="1" />
<Button
android:id="@+id/btn6"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="2"
android:layout_weight="1" />
<Button
android:id="@+id/btn7"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="2"
android:layout_weight="1" />
<Button
android:id="@+id/btn8"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="2"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:id="@+id/thirdrow"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="25" >
<Button
android:id="@+id/btn9"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="3"
android:layout_weight="1" />
<Button
android:id="@+id/btn10"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="3"
android:layout_weight="1" />
<Button
android:id="@+id/btn11"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="3"
android:layout_weight="1" />
<Button
android:id="@+id/btn12"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="3"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:id="@+id/fourththrow"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="25">
<Button
android:id="@+id/btn13"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="4"
android:layout_weight="1" />
<Button
android:id="@+id/btn14"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="4"
android:layout_weight="1" />
<Button
android:id="@+id/btn15"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="4"
android:layout_weight="1" />
<Button
android:id="@+id/btn16"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="4"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
答案 0 :(得分：0)
您需要首先从其父线性布局中分离TemporaryLayout/linearsecondRow，即
private LinearLayout linearfirstRow;
private LinearLayout linearsecondRow;
private LinearLayout linearthirdRow;
private LinearLayout linearfourthRow;
private LinearLayout TemporaryLayout;
linearfirstRow=(LinearLayout)findViewById(R.id.firstrow);
linearsecondRow=(LinearLayout)findViewById(R.id.secondrow);
linearthirdRow=(LinearLayout)findViewById(R.id.thirdrow);
linearfourthRow=(LinearLayout)findViewById(R.id.fourththrow);
TemporaryLayout=linearsecondRow;
linearfirstRow.removeAllViews();
linearsecondRow.removeAllViews();
//Add this although i dont know why the above two lines were used by you
((LinearLayout)TemporaryLayout.getParent()).removeView(TemporaryLayout);
linearfirstRow.addView(TemporaryLayout);