我有一个自定义 ListView ，每行都有一个编辑文本。但是在下一个 Activity 中单击按钮时，我想获取编辑文本的所有值并作为电子邮件发送。但是我只获取第一行的值。如何获取所有行中编辑文本的值？。我的 Activity 是 add2cart.java 。适配器是 cartadapter.java 并且我有 中的按钮buy_ltr.java。我将编辑文本的值保存在 cartAdapter.java 的共享首选项中。并在 itz Activity 中获取该值并将其作为 bundle 传递给 buy_ltr.java
已编辑
CartAdapter.java
public class CartAdapter extends BaseAdapter{
private final String[] pname;
private final String[] price;
String s2;
String abc=add2cart.sme;
String cba=add2cart.dl;
private Context cntxt;
SharedPreferences sp;
SharedPreferences.Editor spe;
public CartAdapter(Context c,String [] pname,String [] price)
{
cntxt=c;
this.pname=pname;
this.price=price;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return pname.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View List;
LayoutInflater mLayoutInflater=(LayoutInflater)cntxt.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView==null) {
List=new View(cntxt);
List=mLayoutInflater.inflate(R.layout.add2crt_sub,parent, false);
}
else {
List=(View)convertView;
}
Button button=(Button)List.findViewById(R.id.remove);
button.setTag(position);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int position = (Integer)v.getTag();
SQLiteDatabase mydb=cntxt.openOrCreateDatabase("addcart",Context.MODE_PRIVATE, null);
String pnam = pname[position];
mydb.execSQL("DELETE FROM add2cart WHERE pnme ='"+pnam+"' AND (usr='"+cba+"' OR usr='"+abc+"')");
Cursor cr = mydb.rawQuery("SELECT * FROM add2cart WHERE usr='"+cba+"' OR usr='"+abc+"'", null);
String [] pname = new String[cr.getCount()];
String [] price = new String[cr.getCount()];
int i = 0;
while(cr.moveToNext())
{
String name = cr.getString(cr.getColumnIndex("pnme"));
String prprice = cr.getString(cr.getColumnIndex("prate"));
pname[i] = name;
price[i] = prprice;
i++;
}
CartAdapter cart=new CartAdapter(cntxt,pname,price);
add2cart.adlstvw.setAdapter(cart);
}
});
TextView nametxt=(TextView)List.findViewById(R.id.prdt_nme);
final TextView pricetxt=(TextView)List.findViewById(R.id.prdt_rate);
final TextView totltxt=(TextView)List.findViewById(R.id.prdt_totl);
final EditText edittext=(EditText)List.findViewById(R.id.prdt_qnty);
edittext.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
sp=PreferenceManager.getDefaultSharedPreferences(cntxt);
spe=sp.edit();
String s1=pricetxt.getText().toString();
///////////s2 holds value of edit text////////
s2=edittext.getText().toString();
spe.putString("quty", s2);
spe.commit();
int i1=0;
if (!s1.equals("")) {
i1=Integer.parseInt(s1);
}
int i2=0;
if (!s2.equals("")) {
i2=Integer.parseInt(s2);
}
int res=i1*i2;
totltxt.setText(Integer.toString(res));
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
nametxt.setText(pname[position].toString());
pricetxt.setText(price[position]);
return List;
}
}
add2cart.java
public class add2cart extends Activity{
public static ListView adlstvw;
Button btn,remove_btn;
SQLiteDatabase mydb;
public static String sme,dl;
public String bl;
SharedPreferences sp;
SharedPreferences.Editor spe;
String qty;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.add2crt);
adlstvw=(ListView)findViewById(R.id.lstvw_add2crt);
btn=(Button)findViewById(R.id.place_order);
Bundle bundl = getIntent().getExtras();
Bundle bodl=getIntent().getExtras();
sp=PreferenceManager.getDefaultSharedPreferences(getBaseContext());
if (bodl!=null) {
dl=bodl.getString("dts");
}
if (bundl != null) {
sme= bundl.getString("dtls");
}
mydb=add2cart.this.openOrCreateDatabase("addcart", MODE_PRIVATE, null);
mydb.execSQL("CREATE TABLE IF NOT EXISTS add2cart(usr TEXT,img BLOB,pnme TEXT,prate NUMERIC,pqty NUMERIC,ptotl NUMERIC)");
Cursor cr = mydb.rawQuery("SELECT * FROM add2cart WHERE usr='"+sme+"' OR usr='"+dl+"'", null);
String [] pname = new String[cr.getCount()];
String [] price = new String[cr.getCount()];
int i = 0;
while(cr.moveToNext())
{
String name = cr.getString(cr.getColumnIndex("pnme"));
String prprice = cr.getString(cr.getColumnIndex("prate"));
pname[i] = name;
price[i] = prprice;
i++;
}
CartAdapter cart=new CartAdapter(this,pname,price);
adlstvw.setAdapter(cart);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
////////////////////// getting value of edit text//////////
if(sp!=null){
qty=sp.getString("quty", null);
}
Intent in=new Intent(add2cart.this,buy_ltr.class);
Bundle bod=new Bundle();
Bundle bndl = new Bundle();
///////passing value of edit text to next activity//////////
Bundle qbdl=new Bundle();
qbdl.putString("prqt", qty);
in.putExtras(qbdl);
bod.putString("kew", dl);
in.putExtras(bod);
bndl.putString("som",sme);
in.putExtras(bndl);
startActivity(in);
}
});
}
}
buy_ltr.java
String prqty=qbdl.getString("prqt");
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
String[] recipients = new String[]{"my@email.com", "",};
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, recipients);
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "customer Order");
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,"name:"+edt1.getText().toString()+"\n"+"address:"+edt2.getText().toString()+"\n"+"city:"+edt3.getText().toString()+"\n"+"pin:"+edt4.getText().toString()+"\n"+"products:"+productnames+"\n"+"quantity:"+prqty);
emailIntent.setType("text/plain");
startActivity(Intent.createChooser(emailIntent, "Send mail..."));
finish();
}
});
最佳答案
commit()方法还需要调用将值保存在SharedPreferences
s2=edittext.getText().toString();
spe.putString("quty", s2);
spe.commit();
//OR if Build.VERSION.SDK_INT > Build.VERSION_CODES.GINGERBREAD
spe.apply();
关于java - Android-获取customListview中第一行的值(共享首选项)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28424294/