Android: is forcing to use ListView
I want to make a menu, which contains 4 different LinearLayouts. Top one has title, second one has description, the third one has 3 ImageViews, which have event onClick, and the fourth one has a Button which also has onClick event.
Somehow, android doesn't like it, and forcing me to use ListView.
The exception message is: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
I have already tried to use ListView, and it didn't work as I expected. For example, the 3rd layout, which has 3 buttons, the events are not working for each ImageView, but instead on the row of the ListView.
What can be done?
Displaying my layouts xml files:
options.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:id="@+id/optionsLa开发者_运维知识库yout"
android:background="@drawable/bg" android:layout_gravity="center">
<include layout="@layout/options_layout1" android:id="@+id/optionsLayout1" />
<include layout="@layout/options_layout2" android:id="@+id/optionsLayout2" />
<include layout="@layout/options_layout3" android:id="@+id/optionsLayout3" />
<include layout="@layout/options_layout4" android:id="@+id/optionsLayout4" />
</LinearLayout>
options_layout1.xml
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/optionsTitleLayout"
android:background="@drawable/options"
android:layout_gravity="center" />
options_layout2.xml
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/chooseThemeTitleLayout"
android:background="@drawable/choose_theme" android:layout_gravity="center"
android:layout_marginTop="70dip" />
options_layout3.xml
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/optionButtonsLayout"
android:layout_gravity="center" android:layout_marginTop="10dip" >
<ImageView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/theme1Btn"
android:background="@drawable/theme1_off" android:layout_marginLeft="10dip"
android:layout_marginRight="10dip" />
<ImageView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_centerInParent="true"
android:id="@+id/theme2Btn" android:background="@drawable/theme2_off"
android:layout_marginLeft="10dip" android:layout_marginRight="10dip" />
<ImageView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_toRightOf="@id/theme2Btn"
android:id="@+id/theme3Btn" android:background="@drawable/theme3_off"
android:layout_marginLeft="10dip" android:layout_marginRight="10dip"/>
</LinearLayout>
options_layout4.xml
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/saveButtonLayout"
android:layout_gravity="center" >
<Button android:id="@+id/saveBtn" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:layout_centerHorizontal="true"
android:text="Save" android:layout_marginTop="10dip"/>
</LinearLayout>
Thanks, Henry.
The problem is not the xml, the problem is somewhere in the code. You use a specific class which expects an ID R.id.list to be in your layout. Probably your Activity still extends ListActivity? This Activity needs an R.id.list in it's layout.
Are you using a ListActivity
? If so, just replace it for Activity
.
If you extends your activity as ListActivity ,you have to listview with android:id="@android:id/list"
otherwise extends your activity as Activity and and get listview :
Listview list = (Listview) findViewById(R.id.mylist);
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