如何通过列表视图中选择项值到另一个活动 [英] How to pass Listview selected item values to another activity

问题描述

我已经成功添加图像从一个ListView仔细查看，当在列表中的项目被点击on.But我怎么想补充更详细的描述（这将不会在列表中显示，但只出现在一个TextView在single_list_item XML？这是我目前的code发送图像（字符串网是简短的文字描述，串ImageId是图像列表）我SingleListItem.java。

 的setContentView（R.layout.hotels）;CustomList适配器=新CustomList（Hotels.this，网络，imageId）;
名单=（ListView控件）findViewById（R.id.list）;
list.setAdapter（适配器）;
list.setOnItemClickListener（新AdapterView.OnItemClickListener（）{
    @覆盖
    公共无效onItemClick（适配器视图＆LT;＆GT;母公司，观景，
                            INT位置，长的id）{
        ImageView的imgview =（ImageView的）view.findViewById（R.id.img）;
        // INT图像= imgview.getId（）;
        INT图像=位置;
        // INT图像= parent.getAdapter（）的getItem（位置）。
        //Toast.makeText(MainActivity.this，+网站[+位置]，Toast.LENGTH_SHORT）.show（）你在点击了;
        意图I =新意图（getApplicationContext（），SingleListItem.class）;
        //i.putExtra(\"zurag，图像）;
        i.putExtra（zurag，imageId [位置]）;
        startActivity（ⅰ）;
    }
}）;
 

这是我目前的code在SingleListItem.java：

 公共类SingleListItem延伸活动{
    Button按钮;
    按钮按钮2;
    @覆盖
    公共无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;
        this.setContentView（R.layout.single_list_item_view）;        ImageView的图像=（ImageView的）findViewById（R.id.imageView1）;
        意向I = getIntent（）;
        INT PIC = i.getIntExtra（zurag，0）;
        images.setImageResource（PIC）;
        TextView的文本=（的TextView）findViewById（R.id.textView1）;
        意向I2 = getIntent（）;
        INT文本1 = i2.getIntExtra（zurag，0）;
        texts.setText（文本1）;        addListenerOnButton（）;
    }
}
 

任何人都可以表明我怎么送过来了较长的文本，例如从一个名为字符串 LONGDESC

解决方案

 意向书I =新意图（getApplicationContext（），SingleListItem.class）;
            i.putExtra（海峡，LONGDESC）;
            i.putExtra（zurag，imageId [位置]）;
            startActivity（ⅰ）;
 

在singlelistitem类

 意向书I = getIntent（）;
        意向I2 = getIntent（）;
        字符串的text1 = i2.getStringExtra（STR）;
        texts.setText（文本1）;
 

I have successfully added Images from a ListView to a detailed View, when an item in the list is clicked on.But how would I add longer descriptions (which would not be shown in the list, but only appear in a textView in the single_list_item xml?Here's my current code for sending images(string "web" is short text descriptions, string ImageId is the list of images) to my SingleListItem.java.

setContentView(R.layout.hotels);

CustomList adapter = new CustomList(Hotels.this, web, imageId);
list=(ListView)findViewById(R.id.list);
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view,
                            int position, long id) {
        ImageView imgview = (ImageView) view.findViewById(R.id.img);
        //int images = imgview.getId();
        int images = position;
        //int images = parent.getAdapter().getItem(position);
        //Toast.makeText(MainActivity.this, "You Clicked at " +web[+ position], Toast.LENGTH_SHORT).show();
        Intent i = new Intent(getApplicationContext(), SingleListItem.class);
        //i.putExtra("zurag", images);
        i.putExtra("zurag", imageId[position]);
        startActivity(i);
    }
});

And here's my current code in SingleListItem.java:

public class SingleListItem extends Activity{
    Button button;
    Button button2;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.setContentView(R.layout.single_list_item_view);

        ImageView images = (ImageView) findViewById(R.id.imageView1);
        Intent i = getIntent();
        int pic =i.getIntExtra("zurag", 0);
        images.setImageResource(pic);
        TextView texts = (TextView) findViewById(R.id.textView1);
        Intent i2 = getIntent();
        int text1 =i2.getIntExtra("zurag", 0);
        texts.setText(text1);

        addListenerOnButton();
    }
}

Could anyone show how I send over the longer text from, say, a string called longdesc?

解决方案

    Intent i = new Intent(getApplicationContext(), SingleListItem.class);
            i.putExtra("str", longdesc);
            i.putExtra("zurag", imageId[position]);
            startActivity(i);

in the singlelistitem class

 Intent i = getIntent();
        Intent i2 = getIntent();
        String text1 =i2.getStringExtra("str");
        texts.setText(text1);

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