Android 如何使用arrayadapter?
我是Android编程的初学者,但我对Java有所了解。我需要知道如何在Android 如何使用arrayadapter?,android,android-listview,Android,Android Listview,我是Android编程的初学者,但我对Java有所了解。我需要知道如何在列表视图中插入乘法表?我不知道怎么做 以下是我尝试过的: ArrayAdapter<String> adaptado = new ArrayAdapter<String>(Tablas_multDiego.this,android.R.layout.simple_list_item_1,tablas(1)); cmb_tabla.setAdapter(adaptado); public String
列表视图中插入乘法表?我不知道怎么做
以下是我尝试过的:
ArrayAdapter<String> adaptado = new ArrayAdapter<String>(Tablas_multDiego.this,android.R.layout.simple_list_item_1,tablas(1));
cmb_tabla.setAdapter(adaptado);
public String[] tablas(int tablas) {
String[] res = new String[10];
for (int i<=10;i++) {
res[i]= tablas + "x" + i + "" + tablas * i;
}
}
ArrayAdapter Adapter=new ArrayAdapter(Tablas\u multDiego.this,android.R.layout.simple\u list\u item\u 1,Tablas(1));
cmb表格设置适配器(适配器);
公共字符串[]tablas(int tablas){
字符串[]res=新字符串[10];
对于(int i来说,这是一种快速的方法:
res/layout/list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:textSize="20sp" />
MainActivity.java
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
int yourNumber = 2;
setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item,
tablas(yourNumber)));
ListView listView = getListView();
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text
Toast.makeText(getApplicationContext(),
((TextView) view).getText(), Toast.LENGTH_SHORT).show();
}
});
}
public String[] tablas(int tablas) {
String[] res = new String[10];
for (int i = 1; i <= 10; i++) {
res[i - 1] = tablas + " x " + i + " = " + tablas * i;
}
return res;
}
}
导入android.app.ListActivity;
导入android.os.Bundle;
导入android.view.view;
导入android.widget.AdapterView;
导入android.widget.AdapterView.OnItemClickListener;
导入android.widget.ArrayAdapter;
导入android.widget.ListView;
导入android.widget.TextView;
导入android.widget.Toast;
公共类MainActivity扩展了ListActivity{
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
整数=2;
setListAdapter(新阵列适配器)(此,R.layout.list_项,
表格(你的号码);
ListView ListView=getListView();
setTextFilterEnabled(true);
setOnItemClickListener(新的OnItemClickListener(){
public void onItemClick(AdapterView父级、视图、,
内部位置,长id){
//单击后,显示带有文本视图文本的祝酒词
Toast.makeText(getApplicationContext(),
((TextView)view.getText(),Toast.LENGTH_SHORT.show();
}
});
}
公共字符串[]tablas(int tablas){
字符串[]res=新字符串[10];
对于(int i=1;i