java 试图从android中的列表视图点击事件中的文本视图中获取价值
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Trying to get value out of text view in list view click event in android
提问by Dale Marshall
I have a click event hooked up to my listview as shown.
如图所示，我有一个点击事件连接到我的列表视图。
int[] GenusListIDs = { R.id.txt_ID, R.id.txt_Genus, R.id.txt_Count };
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.genusitem, cursor_genuslist, service.GenusListColumns, GenusListIDs);
ListView list_Genus = (ListView)findViewById(R.id.list_Genus);
list_Genus.setAdapter(adapter);
list_Genus.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView parent, View view, int position, long id)
{
try
{
Log.println(1, "ItemClick", view.toString());
TextView tv = (TextView)view;
String genus = (String) tv.getText();
Intent i = new Intent(getBaseContext(), Cat_Species.class);//new Intent(this, Total.class);
/*view
i.putExtra("id", id);*/
startActivity(i);
}
catch(Exception ex)
{
Log.println(1, "item-click-event", ex.getMessage());
}
}
});
I need to pass a string param to the new intent based on which listitem they clicked on. The value I want to pass is in the listitem called txt_Genus. How do I get that value out of the listitem to pass to the intent? Don't pay attention to my experiments please haha.
我需要根据他们单击的列表项将字符串参数传递给新意图。我想传递的值在名为 txt_Genus 的列表项中。如何从列表项中获取该值以传递给意图？请不要关注我的实验哈哈。
回答by Damon Skelhorn
This should do it.
这应该做。
TextView tv = (TextView)view.findViewById(R.id.txt_Genius);
String genus = tv.getText().toString();
Then put it into the intent extras, I think you already know this bit.
然后把它放到intent extras中，我想你已经知道这一点了。
i.putExtra("genius", genius);
Edit;
编辑;
In your new activity you would access the intent and get the extras bundle. You can then access anything you placed in the intent on your previous activity like below;
在您的新活动中，您将访问意图并获得附加包。然后，您可以访问您在之前的活动中放置在意图中的任何内容，如下所示；
Bundle extras = getIntent().getExtras();
String genius = extras.getString("genius");
// pop some toast to show the value of genius - not required but shows it works :)
Toast.makeText(this, "Genius value: " + genius, Toast.LENGTH_SHORT).show();
