[置顶] android 如何在自定义对话框中获取edittext中的数据
在项目中忽然遇到这样的问题，需要自定义对话框，对话框需要有一个输入框，以便修改所选中的价格，然后点击确定之后，修改所显示的价格。遇到的最大的问题就是如何能够获取到自定义对话框当中edittext输入的数值，百度了很久，看到的答案都是如下：
//得到自定义对话框 final View DialogView = a .inflate ( R.layout.loand, null);
这是关键的代码</span></strong></span>
//创建对话框
AlertDialog dlg = new AlertDialog.Builder(loand.this)
.setTitle("登录框")
.setView(DialogView)//设置自定义对话框的样式
.setPositiveButton("登陆", //设置"确定"按钮
new DialogInterface.OnClickListener() //设置事件监听
{
public void onClick(DialogInterface dialog, int whichButton)
{
editText1 =(EditText) DialogView.findViewById(R.id.editText1);
editText2 =(EditText) DialogView.findViewById(R.id.editText2);
String id = editText1.getText().toString();
String password = editText2.getText().toString();
//输入完成后，点击“确定”开始登陆
c_log judge = new c_log();
boolean b_judge = judge.aa(id,password);
if(b_judge){
bar();
}else{
//加东西
DisplayToast("NO");
}
}
})
1.主要的activity主类代码：
package client.verbank.mtp.allone.frame.systemsettings; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.TextView; import android.widget.ToggleButton; import client.verbank.mtp.allone.R; import client.verbank.mtp.allone.component.CustomDialogPriceModify; import client.verbank.mtp.allone.consts.IBundleCommData; import client.verbank.mtp.allone.consts.ISystemCommData; import client.verbank.mtp.allone.frame.ControlFragment; import client.verbank.mtp.allone.frame.MainActivity; import client.verbank.mtp.allone.frame.systemsettings.nextpage.ChangePasswordActivity; import client.verbank.mtp.allone.frame.systemsettings.nextpage.ChangePhonePinActivity; import client.verbank.mtp.allone.frame.systemsettings.nextpage.ChooseRssActivity; import client.verbank.mtp.allone.frame.systemsettings.nextpage.SelectInstrumentActivity; import client.verbank.mtp.allone.util.SharepreferencesUtilSystemSettings; /** * 系统设置界面 * * @Project: FEIB_AndroidStation * @Title: SystemSettingsFragment.java * @Package client.verbank.mtp.allone.frame.systemsettings * @Description: TODO * @author qiulinhe [email protected] * @date 2015年9月29日 上午11:48:53 * @Copyright: 2015 www.allone.cn Inc. All rights reserved. * @version V3.0.0 */ public class SystemSettingsFragment extends ControlFragment implements ISystemCommData { // 四组需要打钩的textview初始化 private TextView currencypairs; private TextView openpositionprice; private TextView floatingprofit; private TextView dealtime; private TextView ordercurrencypairs; private TextView pricehighend; private TextView priceendhigh; private TextView summarycurrencypairs; private TextView summaryfloatingprofit; private TextView riseandfall; private TextView applies; // 三个自定义输入金额 private TextView inputamount2; private TextView inputamount5; private TextView inputamount10; // 跳转到下一个页面的4个textview，货币对选择、密码修改、凭证密码修改、RSS源选择 private TextView Currencyofchoice; private TextView changepassword; private TextView changecertificatepassword; private TextView rsssource; ToggleButton mosthightoggle; ToggleButton mostlowtoggle; ToggleButton riseandfallmenutoggle; ToggleButton pricetimetoggle; View layout; // EditText price; AlertDialog dlg; int flagprice = 0; private Handler handler = new Handler(); public SystemSettingsFragment(MainActivity activity) { super(activity); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View vi = inflater.inflate(R.layout.system_settings, container, false); // 价格修改弹出对话框 layout = inflater.inflate( R.layout.activity_systemsettings_pricecustom_dialog, (ViewGroup) vi.findViewById(R.id.dialog)); 。。。。。。。。。。省略了部分代码，因为是公司项目的。。。。。。。。。。。。。。 // 三个自定义金额的监听事件 private void selfThreeMoneyLister(View vi) { inputamount2.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { modifyPriceDialog(); flagprice = 1; } }); inputamount5.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { modifyPriceDialog(); flagprice = 2; } }); inputamount10.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { modifyPriceDialog(); flagprice = 3; } }); } // 点击价格，弹出编辑框，对价格进行修改 private void modifyPriceDialog() { LayoutInflater factory = LayoutInflater.from(getActivity()); final View DialogView = factory.inflate( R.layout.activity_systemsettings_pricecustom_dialog, null); final CustomDialogPriceModify.Builder builder = new CustomDialogPriceModify.Builder( getActivity()); builder.setTitle("價格修改"); builder.setPositiveButton(R.string.confirm, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { <span style="font-size:24px;color:#ff0000;"><strong> // 获取edittext的值 String priceStr = builder.getPrice();//关键代码，getPrice放在自定义的alertdialog类里面，进行初始化</strong></span> if (flagprice == 1) { inputamount2.setText(priceStr); SharepreferencesUtilSystemSettings.putValue( getActivity(), System_key_SelfAmout2, priceStr); } else if (flagprice == 2) { inputamount5.setText(priceStr); SharepreferencesUtilSystemSettings.putValue( getActivity(), System_key_SelfAmout5, priceStr); } else { inputamount10.setText(priceStr); SharepreferencesUtilSystemSettings.putValue( getActivity(), System_key_SelfAmout10, priceStr); } // price.setText(""); /** * 取得view的父组件，然后移除view */ dialog.dismiss(); } }); builder.setNegativeButton(R.string.cancel, new android.content.DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub // ((ViewGroup) layout.getParent()).removeView(layout); dialog.dismiss(); } }); builder.create().show(); } }2.自定义alertdialog类，CustomDialogPriceModify.java，如下：
package client.verbank.mtp.allone.component;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import client.verbank.mtp.allone.R;
/**
* 系统设定中修改价格的弹出对话窗口
*
* @author wangyubo
*
*/
public class CustomDialogPriceModify extends Dialog {
public CustomDialogPriceModify(Context context) {
super(context);
}
public CustomDialogPriceModify(Context context, int theme) {
super(context, theme);
}
public static class Builder {
private Context context;
private String title;
private float textSize;
private String message;
private String positiveButtonText;
private String negativeButtonText;
private View contentView;
private EditText priceText;
private DialogInterface.OnClickListener positiveButtonClickListener;
private DialogInterface.OnClickListener negativeButtonClickListener;
public Builder(Context context) {
this.context = context;
}
public Builder setMessage(String message) {
this.message = message;
return this;
}
public Builder setMessage(String message, float textSize) {
this.message = message;
this.textSize = textSize;
return this;
}
/**
* Set the Dialog message from resource
*
* @param title
* @return
*/
public Builder setMessage(int message) {
this.message = (String) context.getText(message);
return this;
}
/**
* Set the Dialog title from resource
*
* @param title
* @return
*/
public Builder setTitle(int title) {
this.title = (String) context.getText(title);
return this;
}
/**
* Set the Dialog title from String
*
* @param title
* @return
*/
public Builder setTitle(String title) {
this.title = title;
return this;
}
public Builder setContentView(View v) {
this.contentView = v;
return this;
}
/**
* Set the positive button resource and it's listener
*
* @param positiveButtonText
* @return
*/
public Builder setPositiveButton(int positiveButtonText,
DialogInterface.OnClickListener listener) {
this.positiveButtonText = (String) context
.getText(positiveButtonText);
this.positiveButtonClickListener = listener;
return this;
}
<span style="font-size:24px;color:#ff0000;"><strong> //关键代码
public String getPrice() {
return priceText.getText().toString();
}</strong></span>
public Builder setPositiveButton(String positiveButtonText,
DialogInterface.OnClickListener listener) {
this.positiveButtonText = positiveButtonText;
this.positiveButtonClickListener = listener;
return this;
}
public Builder setNegativeButton(int negativeButtonText,
DialogInterface.OnClickListener listener) {
this.negativeButtonText = (String) context
.getText(negativeButtonText);
this.negativeButtonClickListener = listener;
return this;
}
public Builder setNegativeButton(String negativeButtonText,
DialogInterface.OnClickListener listener) {
this.negativeButtonText = negativeButtonText;
this.negativeButtonClickListener = listener;
return this;
}
public CustomDialogPriceModify create() {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// instantiate the dialog with the custom Theme
final CustomDialogPriceModify dialog = new CustomDialogPriceModify(
context, R.style.Dialog);
dialog.setCanceledOnTouchOutside(false);
dialog.setCancelable(false);
View layout = inflater.inflate(
R.layout.activity_systemsettings_pricecustom_dialog, null);
dialog.addContentView(layout, new LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
// set the dialog title
<span style="font-size:24px;color:#ff0000;"><strong>((TextView) layout.findViewById(R.id.title)).setText(title);
priceText = (EditText) layout.findViewById(R.id.price);
//对edittext进行初始化，关键代码</strong></span>
if (positiveButtonText != null) {
((Button) layout.findViewById(R.id.positiveButton))
.setText(positiveButtonText);
if (positiveButtonClickListener != null) {
((Button) layout.findViewById(R.id.positiveButton))
.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
positiveButtonClickListener.onClick(dialog,
DialogInterface.BUTTON_POSITIVE);
}
});
}
} else {
// if no confirm button just set the visibility to GONE
layout.findViewById(R.id.positiveButton).setVisibility(
View.GONE);
}
// set the cancel button
if (negativeButtonText != null) {
((Button) layout.findViewById(R.id.negativeButton))
.setText(negativeButtonText);
if (negativeButtonClickListener != null) {
((Button) layout.findViewById(R.id.negativeButton))
.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
negativeButtonClickListener.onClick(dialog,
DialogInterface.BUTTON_NEGATIVE);
}
});
}
} else {
// if no confirm button just set the visibility to GONE
layout.findViewById(R.id.negativeButton).setVisibility(
View.GONE);
}
// set the content message
if (message != null) {
TextView msgView = (TextView) layout.findViewById(R.id.message);
msgView.setText(message);
if (textSize != 0) {
msgView.setTextSize(textSize);
}
} else if (contentView != null) {
}
dialog.setContentView(layout);
return dialog;
}
}
}
3.剩下的就是布局代码，包括一些圆角的，如果需要的可以参考我之前的博文，就不贴代码了。完成效果如下：
![[置顶] android 如何在自定义对话框中获取edittext中的数据_第1张图片](http://img.e-com-net.com/image/info5/2deb0eab647240719d133aafae4ddef0.jpg)
总结一些，对于自定义的对话框，无法在主activity中初始化对话框里的控件的时候，可以将初始化或者取值的操作放到自定义控件里面，这样就可以取值和赋值操作，忙活了一天，终于在师傅的指导下完成了这部分功能，看来单纯的看网上的答案，可能我几天都解决不了，还得多了解一些本质，对象得传递，得好好恶补一下基础知识，不懂得或者需要解释的可以联系我。