嘿，我已经在我的android报价应用程序中初始化了列表视图。现在，我想当用户将例如生活报价录入磁带时，生活的所有报价应分别显示在cardView上。我不知道如何在每张cardView上显示每个报价，请引导我进入正确的道路，我将非常感激。
这是我去所有其他活动的报价活动
public class QoutesActivity extends AppCompatActivity {
private ListView listView;
// Listview Adapter
ArrayAdapter<String> adapter;
String[] listItems = {
"Happiness Quotes",
"Attitude Quotes",
"Anniversary Quotes",
"Life Quotes",
"Alone Quotes",
"Strength Quotes",
"Patriotism Quotes" ,
"Hope Quotes" ,
"Inspirational Quotes" ,
"Independence Quotes" ,
"Childhood Quotes" ,
"Trust Quotes",
"Selfie Quotes",
"Birthday Quotes" ,
"Knowledge Quotes" ,
"Love Quotes" ,
"Nature Quotes"
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_qoutes);
listView = findViewById(R.id.list_view);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(QoutesActivity.this,
android.R.layout.simple_list_item_1,listItems) {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Get the current item from ListView
View view = super.getView(position, convertView, parent);
// Get the Layout Parameters for ListView Current Item View
ViewGroup.LayoutParams params = view.getLayoutParams();
// Set the height of the Item View
params.height = 180;
view.setLayoutParams(params);
return view;
}
};
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String itemValue = (String) listView.getItemAtPosition(position);
if (position == 0) {
//code specific to first list item
Intent myIntent = new Intent(view.getContext(), HappinessActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 1){
Intent myIntent = new Intent(view.getContext(), AttitudeActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 2){
Intent myIntent = new Intent(view.getContext(), AnniversaryActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 3){
Intent myIntent = new Intent(view.getContext(), LifeActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 4){
Intent myIntent = new Intent(view.getContext(), AloneActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 5){
Intent myIntent = new Intent(view.getContext(), StrengthActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 6){
Intent myIntent = new Intent(view.getContext(), PatriotismActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 7){
Intent myIntent = new Intent(view.getContext(), HopeActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 8){
Intent myIntent = new Intent(view.getContext(), InspitationalActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 9){
Intent myIntent = new Intent(view.getContext(), IndependenceActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 10){
Intent myIntent = new Intent(view.getContext(), ChildhoodActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 11){
Intent myIntent = new Intent(view.getContext(), TrustActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 12){
Intent myIntent = new Intent(view.getContext(), SelfieActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 13){
Intent myIntent = new Intent(view.getContext(), BirthdayActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 14){
Intent myIntent = new Intent(view.getContext(), KnowledgeActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 15){
Intent myIntent = new Intent(view.getContext(), LoveActivity.class);
startActivityForResult(myIntent, 0);
}else if (position == 16){
Intent myIntent = new Intent(view.getContext(), NatureActivity.class);
startActivityForResult(myIntent, 0);
}
}
});
}
}
这是xml文件
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layercontainer"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/bg3">
<ListView
android:id="@+id/list_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
答案 0 :(得分：0)
以我的诚实观点，如果有太多if语句基本上可以验证立场，我会考虑替换。您会看到，我不会说仅仅因为它有效就能这样做是不对的，这是确保您的主要需求正常运行的重要部分。但是，如果您可以缩短用于它的代码行，那就更好了！这正是区分不同程序员的属性的原因。从不同角度看问题的人。我建议您替换更可扩展且可用于将来的功能的主要原因是，如果您想在该代码中进行更改，则只需要修改几行，而不是50多行（请相信我） ，随着您的应用程序变得越来越复杂，它会变得越来越困难）。
话虽如此，进行一个新的活动（命名任何东西），在这种情况下，我将其命名为 userChoiceActivity 。
您当前的活动：
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String itemValue = (String) listView.getItemAtPosition(position);
Intent intent = new Intent(view.getContext(), userChoiceActivity.class);
intent.putExtra("userChoice", itemValue);
startActivity(intent);
}
下一步，在您的 userChoiceActivity 类中，您需要在 onCreate 方法中接收这些值。
String userChoice;
if (savedInstanceState == null) {
Bundle extras = getIntent().getExtras();
if(extras == null) {
userChoice = null;
} else {
userChoice = extras.getString("userChoice");
}
} else {
userChoice = (String) savedInstanceState.getSerializable("userChoice");
}
现在，您应该在第二个活动（ userChoiceActivity ）中的userChoice变量中拥有用户从listView中选取的内容。在这里，您可以使用多个 if 语句来确定将用于填充recyclerview的阵列列表。对于recyclerview，Internet上有无尽的教程，但是您可以尝试使用以下内容：-