如何找到一个TextView编程上ListActivity [英] How to find a TextView programmatically on ListActivity

问题描述

我有一个ListActivity，我想通过编程设置一个TextView那是我的布局里面的文字，我必须这样做我所有行。

这的TextView将显示货币辛博尔有关ListActivity的每一行的当前Locale。

code片断：

  DepositoRepository回购=新DepositoRepository（本）;
光标C = repo.getCursor（）;
适配器=新SimpleCursorAdapter（这一点，R.layout.deposito_list，C，
    新的String [] {Deposito.COLUNA_VALOR，Deposito.COLUNA_DATA}，
    新的INT [] {R.id.tvValorDeposito，R.id.tvDataDeposito}）;
setListAdapter（适配器）;
 

我要为所有行是什么：

 货币moeda = Currency.getInstance（Locale.getDefault（））;
TextView的tvMoeda =（的TextView）findViewById（R.id.tvMoeda）;
tvMoeda.setText（moeda.getSymbol（Locale.getDefault（）））;
 

解决方案

您可以使用自定义适配器到您的ListView。如果你想我可以编辑我的答案，并告诉你如何做到这一点。这里的东西，可以让你在正确的轨道。改编此code到您的应用程序。
而从你的活动只是叫setListAdapter（适配器），适配器作为您的自定义适配器。

希望这有助于！

编辑：

 进口java.util.Currency中;
进口java.util.Locale中;进口android.content.Context;
进口android.database.Cursor;
进口android.view.LayoutInflater;
进口android.view.View;
进口android.view.ViewGroup;
进口android.widget.CursorAdapter;
进口android.widget.TextView;公共类CustomAdapter扩展的CursorAdapter {    公共CustomAdapter（上下文的背景下，光标C）{
        超（背景下，C）;
    }    @覆盖
    公共无效bindView（查看视图，上下文的背景下，光标光标）{
        货币moeda = Currency.getInstance（Locale.getDefault（））;
        TextView的tvMoeda =（TextView中）view.findViewById（R.your_id）; //你的TextView的id在这里
        tvMoeda.setText（moeda.getSymbol（Locale.getDefault（）））;
    }    @覆盖
    公共查看NewView的（上下文的背景下，光标光标的ViewGroup父）{
        LayoutInflater吹气= LayoutInflater.from（背景）;
        视图V = inflater.inflate（R.layout.item，父母，FALSE）; //此处布局
        bindView（ⅴ，上下文，光标）;
        返回伏;
    }}
 

I have a ListActivity and I want to set programmatically the text of a TextView that is inside my layout, I need to do this to all my lines.

This TextView will show the Currency Simbol for the current Locale on each line of the ListActivity.

Code snippet:

DepositoRepository repo = new DepositoRepository(this);
Cursor c = repo.getCursor();
adapter = new SimpleCursorAdapter(this, R.layout.deposito_list, c,
    new String[] { Deposito.COLUNA_VALOR, Deposito.COLUNA_DATA },
    new int[] { R.id.tvValorDeposito, R.id.tvDataDeposito });
setListAdapter(adapter);

What I want for all rows:

Currency moeda = Currency.getInstance(Locale.getDefault());
TextView tvMoeda = (TextView)findViewById(R.id.tvMoeda);
tvMoeda.setText(moeda.getSymbol(Locale.getDefault()));

解决方案

You can use a Custom Adapter to your listView. If you want I can edit my answer and show you how to do this. Here is something that can put you on a right track. Adapt this code to your application. And from your activity just call setListAdapter(adapter), adapter being your custom adapter.

Hope this helps!

EDIT:

import java.util.Currency;
import java.util.Locale;

import android.content.Context;
import android.database.Cursor;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import android.widget.TextView;

public class CustomAdapter extends CursorAdapter{

    public CustomAdapter(Context context, Cursor c) {
        super(context, c);
    }

    @Override
    public void bindView(View view, Context context, Cursor cursor) {
        Currency moeda = Currency.getInstance(Locale.getDefault());
        TextView tvMoeda = (TextView)view.findViewById(R.your_id);//your textView id here
        tvMoeda.setText(moeda.getSymbol(Locale.getDefault()));
    }

    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
        LayoutInflater inflater = LayoutInflater.from(context);
        View v = inflater.inflate(R.layout.item, parent, false);//your layout here
        bindView(v, context, cursor);
        return v;
    }

}

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