Java 我需要使用ArrayAdapter在GridView中显示ArrayList
我需要使用ArrayAdapter在GridView中显示ArrayList,但它当前不起作用 这是我的数组列表:Java 我需要使用ArrayAdapter在GridView中显示ArrayList,java,android,gridview,arraylist,android-arrayadapter,Java,Android,Gridview,Arraylist,Android Arrayadapter,我需要使用ArrayAdapter在GridView中显示ArrayList,但它当前不起作用 这是我的数组列表: ArrayList<String> num = new ArrayList<>(); num.add("Zero"); num.add("one"); num.add("Two"); num.add("Three"); num.add("Four"); num.add("Five"); num.
ArrayList<String> num = new ArrayList<>();
num.add("Zero");
num.add("one");
num.add("Two");
num.add("Three");
num.add("Four");
num.add("Five");
num.add("Six");
num.add("Seven");
num.add("Eight");
num.add("Nine");
num.add("Ten");
这是我目前用来填充GridView的代码:
GridView rootView = (GridView) findViewById(R.id.activity_numbers);
ArrayAdapter<String> array = new ArrayAdapter<>(this,
android.R.layout.simple_list_item_1, num);
rootView.setAdapter(array);
这是一种你可以做到的方法
gridView = (GridView) findViewById(R.id.gridView1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, numbers);
gridView.setAdapter(adapter);
有关更多信息,请参见这一方法
gridView = (GridView) findViewById(R.id.gridView1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, numbers);
gridView.setAdapter(adapter);
有关更多信息,请使用以下代码 activity_main.xml
<LinearLayout
android:id="@+id/imageLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="5dp">
<GridView
android:id="@+id/gridview1"
android:background="@color/colorAccent"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
GridView gridView;
ArrayList<String> arrayList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gridView = (GridView)findViewById(R.id.gridview1);
for(int i=0;i<10;i++)
{
arrayList.add("Item - "+i);
}
ArrayAdapter adapter = new ArrayAdapter(getApplicationContext(),android.R.layout.simple_list_item_1,arrayList);
gridView.setAdapter(adapter);
}
}
您可以使用以下代码 activity_main.xml
<LinearLayout
android:id="@+id/imageLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="5dp">
<GridView
android:id="@+id/gridview1"
android:background="@color/colorAccent"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
GridView gridView;
ArrayList<String> arrayList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gridView = (GridView)findViewById(R.id.gridview1);
for(int i=0;i<10;i++)
{
arrayList.add("Item - "+i);
}
ArrayAdapter adapter = new ArrayAdapter(getApplicationContext(),android.R.layout.simple_list_item_1,arrayList);
gridView.setAdapter(adapter);
}
}
输出显示为list not Grid您应该将其包含在问题正文中。为什么不使用列表视图?是否检查了属性android:numColumns,columnWidth?输出显示为list not Grid您应该将其包含在问题正文中。为什么不使用列表视图?是否检查了属性android:numColumns,列宽?