Gestire una Activity tramite le dialogs

[Anular]

Ciao a tutti,

mi chiedevo se qualcuno di voi sà come è possibile gestire una nuova activity tramite una new Dialog. La dialog viene visualizzata dopo aver cliccato su un Button. In questa dialog vorrei settare 2 EditText per effettuare il match dei caratteri inseriti (TextView per stringa "Password", EditText per input Type "TextPassword", TextView per stringa "Inserisce nuovamente password", EditText per controllo caratteri inseriti).

Questo è l'xml.

<?xml version="1.0" encoding="utf-8"?><br /> <LinearLayout<br /> xmlns:android="http://schemas.android.com/<span class="forTooltip">apk</span>/res/android"<br /> android:layout_width="wrap_content"<br /> android:layout_height="wrap_content" android:background="@drawable/background" android:orientation="vertical"><br /> <activity android:theme="@android:style/Theme.Dialog"><br /> </activity><br /> <br /> <TextView android:layout_width="wrap_content"<br /> android:layout_height="wrap_content" android:id="@+id/Dialog_password" <br /> android:text="@string/password"></TextView><br /> <EditText android:layout_width="wrap_content"<br /> android:layout_height="wrap_content" <br /> android:inputType="textPassword" android:id="@+id/EditText_Pwd1"></EditText><br /> <TextView android:layout_width="wrap_content" <br /> android:layout_height="wrap_content"<br /> android:id="@+id/Dialog_passwordmatch" <br /> android:text="@string/password_match"></TextView><br /> <EditText android:layout_width="wrap_content" <br /> android:layout_height="wrap_content" <br /> android:id="@+id/EditText_Pwd2" android:inputType="textPassword"></EditText><br /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:id="@+id/TextView_PwdProblem"></TextView><br /> </LinearLayout>

​x

 

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<?xml version="1.0" encoding="utf-8"?>

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<LinearLayout

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  xmlns:android="http://schemas.android.com/apk/res/android"

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  android:layout_width="wrap_content"

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  android:layout_height="wrap_content" android:background="@drawable/background" android:orientation="vertical">

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  <activity android:theme="@android:style/Theme.Dialog">

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  </activity>

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​

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<TextView android:layout_width="wrap_content"

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android:layout_height="wrap_content" android:id="@+id/Dialog_password" 

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android:text="@string/password"></TextView>

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<EditText android:layout_width="wrap_content"

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android:layout_height="wrap_content" 

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android:inputType="textPassword" android:id="@+id/EditText_Pwd1"></EditText>

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<TextView android:layout_width="wrap_content" 

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android:layout_height="wrap_content"

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 android:id="@+id/Dialog_passwordmatch" 

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 android:text="@string/password_match"></TextView>

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<EditText android:layout_width="wrap_content" 

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android:layout_height="wrap_content" 

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android:id="@+id/EditText_Pwd2" android:inputType="textPassword"></EditText>

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<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:id="@+id/TextView_PwdProblem"></TextView>

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</LinearLayout>

Ed ecco il codice java

<br /> package com.android.quizzle;<br /> <br /> <br /> <br /> import android.app.Activity;<br /> import android.app.AlertDialog;<br /> import android.app.Dialog;<br /> import android.content.DialogInterface;<br /> import android.content.Intent;<br /> import android.os.Bundle;<br /> import android.view.KeyEvent;<br /> import android.view.View;<br /> import android.view.View.OnClickListener;<br /> import android.widget.Button;<br /> import android.widget.EditText;<br /> import android.widget.TextView;<br /> <br /> public class SettingsActivity exten<span class="forTooltip">ds</span> Activity {<br /> /** Called when the activity is first created. */<br /> @Override<br /> public void onCreate(Bundle savedInstanceState)<br /> {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.settings);<br /> Button alert = (Button) findViewById(R.id.Button_password);<br /> alert.setOnClickListener(new OnClickListener() {<br /> @Override<br /> public void onClick(View view) {<br /> if (view == findViewById(R.id.Button_password)) {<br /> Dialog dialog = new Dialog(SettingsActivity.this);<br /> dialog.setTitle("Set password:");<br /> dialog.setContentView(R.layout.password);<br /> dialog.setCancelable(true);<br /> TextView text = (TextView) dialog.findViewById(R.id.TextView01);<br /> text.setText(R.string.password);<br /> dialog.setTitle("Set Password:");<br /> dialog.setCancelable(true);<br /> <br /> finish();<br /> dialog.show();<br /> }<br /> <br /> }<br /> <br /> });

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​

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package com.android.quizzle;

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​

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​

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​

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import android.app.Activity;

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import android.app.AlertDialog;

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import android.app.Dialog;

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import android.content.DialogInterface;

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import android.content.Intent;

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import android.os.Bundle;

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import android.view.KeyEvent;

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import android.view.View;

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import android.view.View.OnClickListener;

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import android.widget.Button;

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import android.widget.EditText;

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import android.widget.TextView;

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​

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public class SettingsActivity extends Activity {

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    /** Called when the activity is first created. */

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    @Override

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    public void onCreate(Bundle savedInstanceState)

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    {

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        super.onCreate(savedInstanceState);

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        setContentView(R.layout.settings);

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        Button alert = (Button) findViewById(R.id.Button_password);

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        alert.setOnClickListener(new OnClickListener() {

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            @Override

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            public void onClick(View view) {

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                if (view == findViewById(R.id.Button_password)) {

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                    Dialog dialog = new Dialog(SettingsActivity.this);

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                    dialog.setTitle("Set password:");

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                    dialog.setContentView(R.layout.password);

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                    dialog.setCancelable(true);

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                    TextView text = (TextView) dialog.findViewById(R.id.TextView01);

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                    text.setText(R.string.password);

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                    dialog.setTitle("Set Password:");

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                    dialog.setCancelable(true);

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                    finish();

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                    dialog.show();

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            }

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        }

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        });

Il PROBLEMA è che come potete vedere quello che faccio una volta cliccato sul button è una redirect della pagina in cui mi trovo (SettingsActivity). Vorrei poter effettuare uno "switch" ad un'altra classe chiamata CheckPassword.java.

Spero di essere stato chiaro. Grazie per la vostra disponibilità.

[Anular]

A parte un bel "Up" per questo post, stavo pensando in questo modo:
Visto che non devo far altro che attivare una nuova finestra Dialog per gestire gli user input, ho pensato di rendere da prima invisibili gli EditText e successivamente (dopo il click sul button "Password") renderli visibili.

<br /> package com.android.quizzle;<br /> <br /> <br /> <br /> import android.app.Activity;<br /> <br /> <br /> import android.os.Bundle;<br /> import android.view.KeyEvent;<br /> import android.view.View;<br /> import android.view.View.OnClickListener;<br /> import android.widget.Button;<br /> import android.widget.EditText;<br /> <br /> <br /> public class SettingsActivity extends Activity {<br /> /** Called when the activity is first created. */<br /> @Override<br /> public void onCreate(Bundle savedInstanceState)<br /> {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.settings);<br /> Button alert = (Button) findViewById(R.id.Button_password);<br /> alert.setOnClickListener(new OnClickListener() {<br /> <br /> @Override<br /> public void onClick(View view) {<br /> Button b = (Button) findViewById(R.id.EditText_Pwd1);<br /> b.setVisibility(View.VISIBLE);<br /> }});<br /> <br />

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​

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package com.android.quizzle;

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​

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​

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​

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import android.app.Activity;

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​

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​

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import android.os.Bundle;

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import android.view.KeyEvent;

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import android.view.View;

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import android.view.View.OnClickListener;

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import android.widget.Button;

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import android.widget.EditText;

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​

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​

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public class SettingsActivity extends Activity {

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    /** Called when the activity is first created. */

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    @Override

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    public void onCreate(Bundle savedInstanceState)

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    {

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        super.onCreate(savedInstanceState);

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        setContentView(R.layout.settings);

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        Button alert = (Button) findViewById(R.id.Button_password);

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        alert.setOnClickListener(new OnClickListener() {

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            @Override

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            public void onClick(View view) {

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                    Button b = (Button) findViewById(R.id.EditText_Pwd1);

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                    b.setVisibility(View.VISIBLE);

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                        }});

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​

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​

Appena clicco sul bottone password, l'app va in crash!!!! Cosa sbaglio secondo voi?

[Jordano]

se è un EditText perchè fai il cast a Button?

osserva l'output su LogCat e se poi non ne vieni a capo incolla anche quello

[Anular]

A parte la niubbata mostruosa che ho fatto, non è possibile gestire questa situazione con le dialog?

[Jordano]

ti serve una cosa così?

[Anular]

Esatto!!!!

[Jordano]

la trovi negli esempi, scopiazza da li.

in eclipse fai new project, create project from existing samples e poi trovi ApiDemos...

poi dentro al progetto c'hai tipo una gerarchia di esempi, devi andare in App/Dialog e lo trovi.

ora non ho eclipse sottomano quindi non saprei dirti di preciso, ma lo trovi sicuro

[Anular]

Ok, l'ho trovato.

<br /> /*<br /> * C<span class="forTooltip">op</span>yright (C) 2008 The Android <span class="forTooltip">Open Source</span> Project<br /> *<br /> * Licensed under the Apache License, Version 2.0 (the "License");<br /> * you may n<span class="forTooltip">ot</span> use this file except in compliance with the License.<br /> * You may obtain a c<span class="forTooltip">op</span>y of the License at<br /> *<br /> * http://www.apache.org/licenses/LICENSE-2.0<br /> *<br /> * Unless required by applicable law or agreed to in writing, software<br /> * distributed under the License is distributed on an "AS IS" BASIS,<br /> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<br /> * See the License for the specific language governing permissions and<br /> * limitations under the License.<br /> */<br /> <br /> package com.example.android.apis.app;<br /> <br /> // Need the following import to get access to the app resources, since this<br /> // class is in a sub-package.<br /> import android.app.Activity;<br /> import android.os.Bundle;<br /> import android.view.Window;<br /> <br /> import com.example.android.apis.R;<br /> <br /> /**<br /> * <h3>Dialog Activity</h3><br /> * <br /> * <p>This demonstrates the how to write an activity that looks like <br /> * a pop-up dialog.</p><br /> */<br /> public class DialogActivity extends Activity {<br /> /**<br /> * Initialization of the Activity after it is first created. Must at least<br /> * call {@link android.app.Activity#setContentView setContentView()} to<br /> * describe what is to be displayed in the screen.<br /> */<br /> @Override<br /> pr<span class="forTooltip">ot</span>ected void onCreate(Bundle savedInstanceState) {<br /> // Be sure to call the super class.<br /> super.onCreate(savedInstanceState);<br /> <br /> requestWindowFeature(Window.FEATURE_LEFT_ICON);<br /> <br /> // See assets/res/any/layout/dialog_activity.xml for this<br /> // view layout definition, which is being set here as<br /> // the content of our screen.<br /> setContentView(R.layout.dialog_activity);<br /> <br /> getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON, <br /> android.R.drawable.ic_dialog_alert);<br /> }<br /> }<br /> <br />

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​

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/*

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 * Copyright (C) 2008 The Android Open Source Project

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 *

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 * Licensed under the Apache License, Version 2.0 (the "License");

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 * you may not use this file except in compliance with the License.

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 * You may obtain a copy of the License at

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 *

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 *      http://www.apache.org/licenses/LICENSE-2.0

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 *

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 * Unless required by applicable law or agreed to in writing, software

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 * distributed under the License is distributed on an "AS IS" BASIS,

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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

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 * See the License for the specific language governing permissions and

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 * limitations under the License.

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 */

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​

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package com.example.android.apis.app;

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​

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// Need the following import to get access to the app resources, since this

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// class is in a sub-package.

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import android.app.Activity;

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import android.os.Bundle;

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import android.view.Window;

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​

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import com.example.android.apis.R;

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​

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/**

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 * <h3>Dialog Activity</h3>

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 * 

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 * <p>This demonstrates the how to write an activity that looks like 

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 * a pop-up dialog.</p>

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 */

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public class DialogActivity extends Activity {

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    /**

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     * Initialization of the Activity after it is first created.  Must at least

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     * call {@link android.app.Activity#setContentView setContentView()} to

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     * describe what is to be displayed in the screen.

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     */

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    @Override

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    protected void onCreate(Bundle savedInstanceState) {

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        // Be sure to call the super class.

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        super.onCreate(savedInstanceState);

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        requestWindowFeature(Window.FEATURE_LEFT_ICON);

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        // See assets/res/any/layout/dialog_activity.xml for this

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        // view layout definition, which is being set here as

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        // the content of our screen.

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        setContentView(R.layout.dialog_activity);

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        getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON, 

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                android.R.drawable.ic_dialog_alert);

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    }

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}

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​

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​

Ma non credo che è la jpg che hai postato tu. A me interessa esattamente quella finestra li.

[Jordano]

AlertDialogSamples.java

[Anular]

Ok, ora riesco a visualizzare un AlertDialog con un titolo "Password". L'unica cosa che vorrei aggiungere adesso sono le due EditText per effettuare il match delle password. Sto provando ad inserirle sia nel case che nell'onClick ma non riesco a visualizzarle. Spulciando nel file AlertDialog, ho notato il metodo textEntry ma non credo faccia al mio caso.

Secondo te, dove devo metterle?

package com.android.quizzle;<br /> <br /> import android.app.Activity;<br /> import android.app.AlertDialog;<br /> import android.app.Dialog;<br /> import android.content.DialogInterface;<br /> import android.os.Bundle;<br /> import android.view.KeyEvent;<br /> import android.view.View;<br /> import android.view.View.OnClickListener;<br /> import android.widget.Button;<br /> import android.widget.EditText;<br /> import android.widget.TextView;<br /> <br /> <br /> public class SettingsActivity extends Activity {<br /> /** Called when the activity is first created. */<br /> private static final int Password_Dialog = 1;<br /> //preloading dialog<br /> @Override<br /> protected Dialog onCreateDialog(int id) {<br /> <br /> switch (id) {<br /> case Password_Dialog:<br /> final EditText p1 = (EditText) findViewById(R.id.EditText_Pwd1);<br /> final EditText p2 = (EditText) findViewById(R.id.EditText_Pwd2);<br /> final TextView error = (TextView) findViewById(R.id.TextView_PwdProblem);<br /> <br /> return new AlertDialog.Builder(SettingsActivity.this)<br /> <br /> .setTitle(R.string.password)<br /> <br /> .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {<br /> public void onClick(DialogInterface dialog, int whichButton) {<br /> <br /> /* User clicked OK so do some stuff */<br /> }<br /> })<br /> .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {<br /> public void onClick(DialogInterface dialog, int whichButton) {<br /> <br /> /* User clicked Cancel so do some stuff */<br /> }<br /> })<br /> .create();<br /> }<br /> return null;}<br /> public void onCreate(Bundle savedInstanceState)<br /> {<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.settings);<br /> Button alert = (Button) findViewById(R.id.Button_password);<br /> alert.setOnClickListener(new OnClickListener() {<br /> <br /> @Override<br /> public void onClick(View view) {<br /> <br /> showDialog(Password_Dialog);<br /> final EditText p1 = (EditText) findViewById(R.id.EditText_Pwd1);<br /> final EditText p2 = (EditText) findViewById(R.id.EditText_Pwd2);<br /> final TextView error = (TextView) findViewById(R.id.TextView_PwdProblem);<br /> }});<br /> <br />

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package com.android.quizzle;

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​

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import android.app.Activity;

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import android.app.AlertDialog;

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import android.app.Dialog;

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import android.content.DialogInterface;

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import android.os.Bundle;

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import android.view.KeyEvent;

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import android.view.View;

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import android.view.View.OnClickListener;

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import android.widget.Button;

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import android.widget.EditText;

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import android.widget.TextView;

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​

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​

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public class SettingsActivity extends Activity {

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    /** Called when the activity is first created. */

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    private static final int Password_Dialog = 1;

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    //preloading dialog

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    @Override

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    protected Dialog onCreateDialog(int id) {

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        switch (id) {

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        case Password_Dialog:

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            final EditText p1 = (EditText) findViewById(R.id.EditText_Pwd1);

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            final EditText p2 = (EditText) findViewById(R.id.EditText_Pwd2);

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            final TextView error = (TextView) findViewById(R.id.TextView_PwdProblem);

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            return new AlertDialog.Builder(SettingsActivity.this)

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                .setTitle(R.string.password)

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                .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {

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                    public void onClick(DialogInterface dialog, int whichButton) {

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​

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                        /* User clicked OK so do some stuff */

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                    }

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                })

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                .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {

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                    public void onClick(DialogInterface dialog, int whichButton) {

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​

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                        /* User clicked Cancel so do some stuff */

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                    }

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                })

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                .create();

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        }

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        return null;}

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    public void onCreate(Bundle savedInstanceState)

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    {

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        super.onCreate(savedInstanceState);

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        setContentView(R.layout.settings);

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        Button alert = (Button) findViewById(R.id.Button_password);

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        alert.setOnClickListener(new OnClickListener() {

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            @Override

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            public void onClick(View view) {

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                showDialog(Password_Dialog);

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                final EditText p1 = (EditText) findViewById(R.id.EditText_Pwd1);

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                final EditText p2 = (EditText) findViewById(R.id.EditText_Pwd2);

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                final TextView error = (TextView) findViewById(R.id.TextView_PwdProblem);

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                        }});

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​

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