将数据从另一个活动显示到另一个从类到数组列表到linearlayout动态

Question

每个部分的代码如下所示。

这是arraylist从

获取数据的类

package kfc.project;

public class Product {


    String name;
    int servingSize;
    int calories;
    int fat;
    int saturatedFat;
    int transFat;
    int cholesterol;
    int sodium;
    int carbs;
    int protein;


    public Product (String name, int servingSize, int calories, int fat, int saturatedFat, int transFat, int cholesterol, int sodium, int carbs, int protein){
        this.name=name;
        this.calories=calories;
        this.servingSize=servingSize;
        this.fat=fat;
        this.saturatedFat=saturatedFat;
        this.transFat=transFat;
        this.cholesterol=cholesterol;
        this.sodium=sodium;
        this.carbs=carbs;
        this.protein=protein;
    }

    public Product (String name, int servingSize){
        this.name=name;
        this.servingSize=servingSize;
    }

    public String getName() {
        return name;
    }

    public int getServingSize() {
        return servingSize;
    }

    public int getCalories() {
        return calories;
    }

    public int getFat() {
        return fat;
    }

    public int getSaturatedFat() {
        return saturatedFat;
    }

    public int getTransFat() {
        return transFat;
    }

    public int getCholesterol() {
        return cholesterol;
    }

    public int getSodium() {
        return sodium;
    }

    public int getCarbs() {
        return carbs;
    }

    public int getProtein() {
        return protein;
    }


}

这是获取上述参数的产品的数组列表

package kfc.project;

import java.util.ArrayList;

public class ProductList {
    ArrayList<Product> list;


    public ProductList (){
        list = new ArrayList<Product>();

        //CREATE PRODUCT HERE
        Product chicken;
        list.add(new Product("ChickenTest",99));    

        Product rice;
        list.add(new Product("RiceTest",11));
    }

    public String[] getNames (){
        int c = 0;
        int size = list.size() - 1;
        String[] names = new String[size];

        while (size >= c) {
            //names.add(list.get(c).getName());
            names[c] = list.get(c).getName();
            c++;
        }

        c = 0;

        return names;
    }

    public ArrayList<Product> getList (){
        return list;
    }

}

列表视图java文件，使其对已经正常工作的xml文件可见

package kfc.project;

public class ProductListView extends ListActivity {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {       
        super.onCreate(savedInstanceState);

        ProductList pl = new ProductList();

        //setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, PRODUCTS));
        setListAdapter(new ArrayAdapter<Product>(this, R.layout.list_item, pl.getList() ));

        ListView lv = getListView();
        lv.setTextFilterEnabled(true);

        lv.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(), "View Product", Toast.LENGTH_SHORT).show();

            startActivity(new Intent("kfc.project.PRODUCTDETAIL"));
          }

        });

    }



    //TEST STRING ARRAY
    static String[] PRODUCTS = new String[] {
        "Chicken", "Rice", "Coke", "Chicken Burger"
    };



}

xml文件。这是我希望从列表视图中单击它时动态显示类中的数据，以便数据是动态的

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  android:scrollbarAlwaysDrawVerticalTrack="true"
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="wrap_content" android:gravity="top|center"
  android:background="@drawable/bg">

    <TableLayout
        android:id="@+id/tableLayout1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" 
        >

        <TableRow
            android:id="@+id/tableRow1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >


        </TableRow>

        <TableRow
            android:id="@+id/tableRow2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:gravity="right">

            <Button
                android:id="@+id/button1"      
                android:background="@drawable/button2"
                android:textColor="#FFFFFF"   
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:text="ADD TO MENU" android:gravity="right" android:paddingRight="4sp" android:paddingTop="10sp"/>

            <Button
                android:id="@+id/button2"
                android:background="@drawable/button2"
                android:textColor="#FFFFFF"   
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:text="GET TOTAL" android:gravity="right" android:paddingRight="15sp" android:paddingTop="10sp"/>

        </TableRow>

        <TableRow
            android:id="@+id/tableRow4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Serving Size: "
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="100"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>
          <ImageView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:src="@android:drawable/divider_horizontal_dark"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:scaleType="fitXY"
    android:paddingLeft="5dp"
    android:paddingRight="5dp"
    android:paddingBottom="2dp"
    android:paddingTop="2dp" />

    </TableLayout>

    <TableRow
        android:id="@+id/tableRow3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:gravity="left">

    </TableRow>

    <TableLayout
        android:id="@+id/tableLayout2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <TableRow
            android:id="@+id/tableRow5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

        </TableRow>

        <TableRow
            android:id="@+id/tableRow6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView4"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="left"
                android:text="Amount Per Serving: "
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView7"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="20"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView5"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Calories:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView17"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="30"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <ImageView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:src="@android:drawable/divider_horizontal_dark"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:scaleType="fitXY"
    android:paddingLeft="5dp"
    android:paddingRight="5dp"
    android:paddingBottom="2dp"
    android:paddingTop="2dp" />

        <TableRow
            android:id="@+id/tableRow8"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TableRow
                android:id="@+id/tableRow14"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/textView3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="right"
                    android:text="% Daily Value:          "
                    android:textAppearance="?android:attr/textAppearanceMedium" />

                <TextView
                    android:id="@+id/textView21"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="35"
                    android:textAppearance="?android:attr/textAppearanceMedium" />
            </TableRow>
        </TableRow>

    </TableLayout>

    <TableLayout
        android:id="@+id/tableLayout3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <TableRow
            android:id="@+id/tableRow9"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView8"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Total Fat:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView22"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="60"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow10"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView9"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="       Saturated Fat:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView23"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="34"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow11"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView10"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="       Trans Fat:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView24"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="53"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow12"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView11"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Cholesterol:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView25"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="25"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow13"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView12"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Sodium:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView26"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="10"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow15"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView13"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Total Carbohydrate:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView27"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="200"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow16"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView14"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="       Dietary Fiber:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView28"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="34"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow17"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView15"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="       Sugars:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView29"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="16"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow18"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView16"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Protein:"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView30"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="40"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>
<ImageView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:src="@android:drawable/divider_horizontal_dark"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:scaleType="fitXY"
    android:paddingLeft="5dp"
    android:paddingRight="5dp"
    android:paddingBottom="2dp"
    android:paddingTop="2dp" />
<TableRow
    android:id="@+id/tableRow24"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >
</TableRow>

        <TableRow
            android:id="@+id/tableRow19"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

        </TableRow>

    </TableLayout>

    <TableLayout
        android:id="@+id/tableLayout4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <TableRow
            android:id="@+id/tableRow20"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

        </TableRow>

        <TableRow
            android:id="@+id/tableRow21"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

        </TableRow>

        <TableRow
            android:id="@+id/tableRow22"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView19"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Vitamin A: "
                android:textAppearance="?android:attr/textAppearanceMedium" />
                        <TextView
                android:id="@+id/textView31"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="40"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView20"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="   Vitamin C: "
                android:textAppearance="?android:attr/textAppearanceMedium" />
                        <TextView
                android:id="@+id/textView32"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="30"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow23"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView6"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Calcium: "
                android:textAppearance="?android:attr/textAppearanceMedium" />
                        <TextView
                android:id="@+id/textView33"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="35"
                android:textAppearance="?android:attr/textAppearanceMedium" />

            <TextView
                android:id="@+id/textView18"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="   Iron: "
                android:textAppearance="?android:attr/textAppearanceMedium" />
                        <TextView
                android:id="@+id/textView34"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="40"
                android:textAppearance="?android:attr/textAppearanceMedium" />

        </TableRow>

        <TableRow
            android:id="@+id/tableRow25"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >

        </TableRow>

    </TableLayout>

</LinearLayout>

Answer 1

  lv.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(), "View Product",
            Toast.LENGTH_SHORT).show();

        Product product = pl.getList().get(position);
        System.out.println("getName() : "+product.getName());


        Intent intent = new Intent(ProductListView.this, ProductDetails.class);
        intent.putExtra("name", product.getName());
              //Add other values alos in Extras....

        ProductListView.this.startActivity(intent);
        }
    });

从获得的产品对象中，可以访问该产品的所有值。在调用下一个Activity时，在Extras中传递这些值并在产品详细信息活动中使用它们。

<强> ProductDetails.class

将xml设置为ProductDetails活动的内容，并在活动的onCreate（）中获取通过Intent传递的详细信息。这些值可以设置为xml中的T​​exView。

@Override
    public void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        setContentView(R.layout.product_details);

        Bundle extras = getIntent().getExtras();

        String name = extras.getString("name");

        if (name  != null) {
            TextView text1 = (TextView) findViewById(R.id.textView2);
            text1.setText(name);
        }
    }