Java – Why doesn’t the ‘text’ open custom dialog show?

I felt like an idiot. I started with here Copied this project. The zip file will not be imported into Android Studio 1.0.2. Suggested migrating it to Gradle, but I don’t know how. (I later found the link to do this, I couldn’t implement it, it’s at the bottom of this mess.) )

So I created a new project and cut and pasted 3 xml and 1 java file. I finally got compiled.

The following dialog should have been displayed, but when I ran it, it didn’t show the text of text, which is “Android custom dialog for example“. It only shows icons; As specified in custom.xml, there is no text at all on the right. I spent a few hours (I obviously didn’t have a good grasp of Android java or xml or connections – I was working on it – but I saw the TextView named text I would like to see in java and xml) trying to solve this problem. I hope you all help me now.

The custom.xml file lists below what I tried (in vain).

EDIT – here’s what I see :

This is AndroidManifest.xml:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.dslomer64.android">

<application android:allowBackup="true"
                 android:label="@string/app_name"
                 android:icon="@drawable/ic_launcher"
                 android:theme="@style/AppTheme">
        <activity
            android:name=". MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

</application>

</manifest>

This is the MainActivity .java:

package com.dslomer64.android;

import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends Activity {

final Context context = this;
    private Button button;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

button = (Button) findViewById(R.id.buttonShowCustomDialog);

 add button listener
        button.setOnClickListener(new OnClickListener() {

@Override
            public void onClick(View arg0) {

 custom dialog
                final Dialog dialog = new Dialog(context);
                dialog.setContentView(R.layout.custom);
                dialog.setTitle("Title...");

 set the custom dialog components - text, image and button
                TextView text = (TextView) dialog.findViewById(R.id.text);
                text.setText("Android custom dialog example!");
                ImageView image = (ImageView) dialog.findViewById(R.id.image);
                image.setImageResource(R.drawable.ic_launcher);

Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
                 if button is clicked, close the custom dialog
                dialogButton.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        dialog.dismiss();
                    }
                });

dialog.show();
            }
        });
    }
}

This is main.xml.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              android:orientation="vertical" >

<Button
        android:id="@+id/buttonShowCustomDialog"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Show Custom Dialog" />

</LinearLayout>

This is custom.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent" >

<ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginRight="5dp" />

<TextView
        android:id="@+id/text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textColor="#FFF"
        android:layout_toRightOf="@+id/image"/>/>

<Button
        android:id="@+id/dialogButtonOK"
        android:layout_width="100px"
        android:layout_height="wrap_content"
        android:text=" Ok "
        android:layout_marginTop="5dp"
        android:layout_marginRight="5dp"
        android:layout_below="@+id/image"
        />

</RelativeLayout>

I removed a /> and you see two in custom.xml in TextView.

I added View to dialogButton.setOnClickListener as follows:

dialogButton.setOnClickListener(new View.OnClickListener() {

I commented out the entire dialogButton.setOnClickListener.

I deleted toRightOf... image line.

I removed all objects from custom.xml except the TextView named text and removed the code for the connection from the MainActivity .java

I debugged it and text contains the text it should contain, but it doesn’t show.

All to no avail.

This is the app's gradle.build:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.2"

defaultConfig {
        applicationId "com.dslomer64.android"
        minSdkVersion 15
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.0.0'
}

I

know this is trivial for experienced Android programmers, but I just can’t find it. And I found nothing insignificant about the Android GUI.

I hope no one will feel obligated to create a project from all these files. I hope the lost connection is obvious to experienced Android programmers.

When I tried to migrate to Gradle, I used this > located at ‘ build.gradle file. But it doesn’t like this line :

            classpath 'com.android.tools.build:gradle:0.5.+'

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.5.+'
    }
}
apply plugin: 'android'

dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')
}

android {
    compileSdkVersion 18
    buildToolsVersion "18.0.1"

sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
        }

 Move the tests to tests/java, tests/res, etc...
        instrumentTest.setRoot('tests')

 Move the build types to build-types/<type>
         For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
         This moves them out of them default location under src/<type>/... which would
         conflict with src/ being used by the main source set.
         Adding new build types or product flavors should be accompanied
         by a similar customization.
        debug.setRoot('build-types/debug')
        release.setRoot('build-types/release')
    }
}

My gradle version is 2.2.1, but it doesn’t like that either :

        classpath 'com.android.tools.build:gradle:2.2.1'

I see the text on your picture. The background of the dialog is white, and you specify textColor as the #FFF, which is why you can’t see it. Change the color of the background or font of the Dialog.