所以这是父活动，它有一个列表视图，根据所选的过滤器进行更改。
现在我想要的是，当我点击列表视图中的任何项目时，它应该打开一个新的活动并且我成功地编写了那个东西。
现在应该发生的是，无论新活动是什么，它都应该点击项目的标题，但我不想为每个项目创建不同的布局。简而言之，我想要一些动态
public class Catalogue extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_catalogue);
Spinner spinner = (Spinner) findViewById(R.id.spinner);
// Create an ArrayAdapter using the string array and a default spinner layout
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
R.array.filter_array, android.R.layout.simple_spinner_item);
// Specify the layout to use when the list of choices appears
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// Apply the adapter to the spinner
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(this);
ImageView BackFromCatalogue = (ImageView) findViewById(R.id.BackFromCatalogue);
BackFromCatalogue.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
switch (position) {
case 0:
ArrayList<Food> new_food = new ArrayList<Food>();
new_food.add(new Food("Pizza", "probably attracts evryone", R.drawable.test));
new_food.add(new Food("noddles", "probably attracts evryone", R.drawable.test));
new_food.add(new Food("pasta", "probably attracts evryone", R.drawable.test));
new_food.add(new Food("burger", "probably attracts evryone", R.drawable.test));
new_food.add(new Food("coke", "probably attracts evryone", R.drawable.test));
FoodAdapter food_adapter = new FoodAdapter(this, new_food);
ListView listView = (ListView) findViewById(R.id.food_list);
listView.setAdapter(food_adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch (position) {
case 0:
Intent i = new Intent(Catalogue.this, FoodItem.class);
startActivity(i);
break;
case 1:
Intent i1 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i1);
break;
case 2:
Intent i2 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i2);
break;
case 3:
Intent i3 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i3);
break;
case 4:
Intent i4 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i4);
break;
}
}
});
break;
case 1:
ArrayList<Food> new_food1 = new ArrayList<Food>();
new_food1.add(new Food("coke", "probably attracts evryone", R.drawable.test));
new_food1.add(new Food("coke", "probably attracts evryone", R.drawable.test));
new_food1.add(new Food("coke", "probably attracts evryone", R.drawable.test));
new_food1.add(new Food("coke", "probably attracts evryone", R.drawable.test));
new_food1.add(new Food("coke", "probably attracts evryone", R.drawable.test));
FoodAdapter food_adapter1 = new FoodAdapter(this, new_food1);
ListView listView1 = (ListView) findViewById(R.id.food_list);
listView1.setAdapter(food_adapter1);
listView1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch (position) {
case 0:
Intent i = new Intent(Catalogue.this, FoodItem.class);
startActivity(i);
break;
case 1:
Intent i1 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i1);
break;
case 2:
Intent i2 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i2);
break;
case 3:
Intent i3 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i3);
break;
case 4:
Intent i4 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i4);
break;
}
}
});
break;
case 2:
ArrayList<Food> new_food2 = new ArrayList<Food>();
new_food2.add(new Food("burger", "probably attracts evryone", R.drawable.test));
new_food2.add(new Food("burger", "probably attracts evryone", R.drawable.test));
new_food2.add(new Food("burger", "probably attracts evryone", R.drawable.test));
new_food2.add(new Food("burger", "probably attracts evryone", R.drawable.test));
new_food2.add(new Food("burger", "probably attracts evryone", R.drawable.test));
FoodAdapter food_adapter2 = new FoodAdapter(this, new_food2);
ListView listView2 = (ListView) findViewById(R.id.food_list);
listView2.setAdapter(food_adapter2);
listView2.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch (position) {
case 0:
Intent i = new Intent(Catalogue.this, FoodItem.class);
startActivity(i);
break;
case 1:
Intent i1 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i1);
break;
case 2:
Intent i2 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i2);
break;
case 3:
Intent i3 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i3);
break;
case 4:
Intent i4 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i4);
break;
}
}
});
break;
case 3:
ArrayList<Food> new_food3 = new ArrayList<Food>();
new_food3.add(new Food("pasta", "probably attracts evryone", R.drawable.test));
new_food3.add(new Food("pasta", "probably attracts evryone", R.drawable.test));
new_food3.add(new Food("pasta", "probably attracts evryone", R.drawable.test));
new_food3.add(new Food("pasta", "probably attracts evryone", R.drawable.test));
new_food3.add(new Food("pasta", "probably attracts evryone", R.drawable.test));
FoodAdapter food_adapter3 = new FoodAdapter(this, new_food3);
ListView listView3 = (ListView) findViewById(R.id.food_list);
listView3.setAdapter(food_adapter3);
listView3.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch (position) {
case 0:
Intent i = new Intent(Catalogue.this, FoodItem.class);
startActivity(i);
break;
case 1:
Intent i1 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i1);
break;
case 2:
Intent i2 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i2);
break;
case 3:
Intent i3 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i3);
break;
case 4:
Intent i4 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i4);
break;
}
}
});
break;
case 4:
ArrayList<Food> new_food4 = new ArrayList<Food>();
new_food4.add(new Food("noddles", "probably attracts evryone", R.drawable.test));
new_food4.add(new Food("noddles", "probably attracts evryone", R.drawable.test));
new_food4.add(new Food("noddles", "probably attracts evryone", R.drawable.test));
new_food4.add(new Food("noddles", "probably attracts evryone", R.drawable.test));
new_food4.add(new Food("noddles", "probably attracts evryone", R.drawable.test));
FoodAdapter food_adapter4 = new FoodAdapter(this, new_food4);
ListView listView4 = (ListView) findViewById(R.id.food_list);
listView4.setAdapter(food_adapter4);
listView4.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch (position) {
case 0:
Intent i = new Intent(Catalogue.this, FoodItem.class);
startActivity(i);
break;
case 1:
Intent i1 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i1);
break;
case 2:
Intent i2 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i2);
break;
case 3:
Intent i3 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i3);
break;
case 4:
Intent i4 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i4);
break;
}
}
});
break;
default:
ArrayList<Food> new_food5 = new ArrayList<Food>();
new_food5.add(new Food("Pizza", "probably attracts evryone", R.drawable.test));
new_food5.add(new Food("Pizza", "probably attracts evryone", R.drawable.test));
new_food5.add(new Food("Pizza", "probably attracts evryone", R.drawable.test));
new_food5.add(new Food("Pizza", "probably attracts evryone", R.drawable.test));
new_food5.add(new Food("Pizza", "probably attracts evryone", R.drawable.test));
FoodAdapter food_adapter5 = new FoodAdapter(this, new_food5);
ListView listView5 = (ListView) findViewById(R.id.food_list);
listView5.setAdapter(food_adapter5);
listView5.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch (position) {
case 0:
Intent i = new Intent(Catalogue.this, FoodItem.class);
startActivity(i);
break;
case 1:
Intent i1 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i1);
break;
case 2:
Intent i2 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i2);
break;
case 3:
Intent i3 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i3);
break;
case 4:
Intent i4 = new Intent(Catalogue.this, FoodItem.class);
startActivity(i4);
break;
}
}
});
break;
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
}
这个底部是单击列表视图中的项目时应打开的活动，其中标题为点击的项目
package com.anonymous.jit.caterers;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
public class FoodItem extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_food_item);
ImageView BackFromCatalogue = (ImageView) findViewById(R.id.BackFromFoodItem);
BackFromCatalogue.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
TextView FITextview = (TextView) findViewById(R.id.app_title);
FITextview.setText(positionfinder());
}
public String positionfinder(){
return string;
}
}
答案 0 :(得分：0)
将接口设置为食物适配器类，如下所示..
onItemClickListner onItemClickListner;
public void setOnItemClickListner(CommentsAdapter.onItemClickListner onItemClickListner) {
this.onItemClickListner = onItemClickListner;
}
public interface onItemClickListner {
void onClick(int position);//pass your object types.
}
在getView方法中，下面是click事件的代码..
outerContiner.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
onItemClickListner.onClick(position);
}
});
将适配器绑定到listview后调用下面的代码..
adapter.setOnItemClickListner(new CommentsAdapter.onItemClickListner() {
@Override
public void onClick(int position) {
Log.d("Postition::",""+position);
adapter.notifyDataSetChanged();
}
});
答案 1 :(得分：0)
从案例0的角度来看：
修改你的所有这些：
Intent i = new Intent(Catalogue.this, FoodItem.class);
startActivity(i);
break;
喜欢
Intent i = new Intent(Catalogue.this, FoodItem.class);
i.putExtra("foodName",new_food.get(position).yourFoodNameGetter());
startActivity(i);
break;
并修改您的
public String positionfinder(){
return string;
}
喜欢
public String positionfinder(){
return getIntent().getStringExtra("foodName");
}
此处yourFoodNameGetter()是您在Model类中foodName获取的getter。