大约一个星期以来，我一直在用头撞桌子。希望有人可以提供帮助。
这就是我想要做的。
显示登录警报对话框。-- 最好我喜欢股票的外观，所以 alertdialog.builder 对我有用。我试过制作一个自定义对话框，但我似乎无法让按钮看起来正确。
如果密码正确，则开始活动，但如果在取消或正确之前不重新显示对话框。
这听起来很简单，但我就是无法理解它。我的代码看起来很垃圾，我知道我一直在剪切和粘贴东西。
我最初是在每个不正确的密码之后调用 getpasswd 方法 oncreate 。Unfortuantley 改变方向时我的窗口泄露了。所以我尝试了这个 oncreatedialog 的东西，我不再有泄漏，但我无法在旋转之间保留我的 edittext 文本框，即使输入不正确，按下“ok”按钮后我也无法重新显示对话框。任何指针将不胜感激。
谢谢。
package com.mstamp.dreamhostpal;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class GetLoginPassword extends Activity {
public static String MY_PREFS = "Settings";
private static final String TAG = "MyActivity";
String value;
String crypto;
String text;
boolean setup;
String cleartxt;
boolean cancel_pushed;
private static final int ALERT_DIALOG1 = 1;
Dialog dialog;
//final EditText input = new EditText(this);
boolean dismissed = false;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.setup_password);
loadPreferences();
// showDialog(ALERT_DIALOG1);
// getPasswd();
}
@Override public void onPostCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
showDialog(ALERT_DIALOG1);
//getPasswd();
}
protected void onPause() {
super.onPause();
//dialog.dismiss();
if (cancel_pushed == false) {
//EXIT();
}
}
private void EXIT() {
this.finish();
}
public void loadPreferences() {
int mode = Activity.MODE_PRIVATE;
SharedPreferences mySharedPreferences = getSharedPreferences(MY_PREFS, mode);
crypto = mySharedPreferences.getString("cryptedAPIKey", null);
setup = mySharedPreferences.getBoolean("setup", false);
}
@Override
protected Dialog onCreateDialog(int id) {
Dialog dialog;
switch(id) {
case ALERT_DIALOG1:
dialog= getPasswd();
break;
default:
dialog = null;
}
return dialog;
}
private Dialog getPasswd() {
Dialog dialog;
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setCancelable(false);
alert.setTitle("Login");
// Set an EditText view to get user input
final EditText input = new EditText(this);
//final EditText editTextPasswordFirst= (EditText)d.findViewById(R.id.EditTextPasswordFirst);
input.setHint("Password");
alert.setView(input);
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
value = input.getText().toString();
// Do something with value!
if (value != null && value.trim().length() == 0) {
Context context = getApplicationContext();
CharSequence text = "Please enter a password.";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
getPasswd();
} else if (value.trim().length() < 5 && value.trim().length() > 0) {
Context context = getApplicationContext();
CharSequence text = "The password must be 5 characters or greater.";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
//getPasswd();
dismissed = true;
}
else {
try {
if (setup) {
cleartxt = CryptoHelper.decrypt(value, crypto);
Intent MainCommandsList = new Intent();
MainCommandsList.setClassName("com.mstamp.dreamhostpal", "com.mstamp.dreamhostpal.MainCommandsList");
MainCommandsList.putExtra("cleartxtAPIKey", cleartxt);
MainCommandsList.putExtra("cleartxtpassword", value);
startActivity(MainCommandsList);
}
if (!setup) {
cleartxt = CryptoHelper.decrypt(value, crypto);
Intent GetCommandsMakeDatabase = new Intent();
GetCommandsMakeDatabase.setClassName("com.mstamp.dreamhostpal", "com.mstamp.dreamhostpal.GetCommandsMakeDatabase");
GetCommandsMakeDatabase.putExtra("cleartxtAPIKey", cleartxt);
GetCommandsMakeDatabase.putExtra("cleartxtpassword", value);
startActivity(GetCommandsMakeDatabase);
EXIT();
}
} catch (Exception e) {
// TODO Auto-generated catch block
//e.printStackTrace();
Context context = getApplicationContext();
CharSequence text = "That password was incorrect.";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
getPasswd();
}
}
}
});
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
// Canceled.
cancel_pushed = true;
EXIT();
}
});
dialog = alert.create();
return dialog;
//alert.show();
}