Android Discussion Boards

Re: android studio

Richard Andrew x6420-Jul-20 9:50

Richard Andrew x64

20-Jul-20 9:50

Richard MacCutchan wrote:
Is that a question or a statement?

It's a demand.

The difficult we do right away...
...the impossible takes slightly longer.

Re: android studio

Richard MacCutchan20-Jul-20 10:03

Richard MacCutchan

20-Jul-20 10:03

Oh dear, I was afraid it might be. Laugh | :laugh:

File and App sharing app

AdityaSha8-Jul-20 17:00

AdityaSha

8-Jul-20 17:00

Hii guys i have a question that i create app . The app is able to send files like .mp3,.pdf etc.

But i want app should able to share apps also so what are the thing required . Can you suggest me.

Thank you.

Re: File and App sharing app

Richard MacCutchan8-Jul-20 22:49

Richard MacCutchan

8-Jul-20 22:49

AdityaSha wrote:
Can you suggest me.

You first need to decide, and describe, exactly what you mean by "app should able to share apps". What exactly do you want to share and who with?

Re: File and App sharing app

AdityaSha10-Jul-20 1:51

AdityaSha

10-Jul-20 1:51

I want to share app and files like .pdf and .mp3 files. To another device using wifi direct . I created app which can perform all operation which i want but it not able to send apps to another device . Basically a clone of ShareIT app.

Re: File and App sharing app

Richard MacCutchan10-Jul-20 3:11

Richard MacCutchan

10-Jul-20 3:11

Well I guess you need to research how to do the sharing. I can only assume that you need to post your files onto a web server somewhere that other people can get access to.

java.lang.IllegalArgumentException: Unknown URI: content

Ирина Костић23-Jun-20 13:56

Ирина Костић

23-Jun-20 13:56

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.projekat/com.example.projekat.EmailsActivity}: java.lang.IllegalArgumentException: Unknown URI: content://com.example.projekat/emails.db
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2805)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2883)
        at android.app.ActivityThread.-wrap11(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1613)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6523)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:445)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:857)
     Caused by: java.lang.IllegalArgumentException: Unknown URI: content://com.example.projekat/emails.db
        at com.example.projekat.database.ContactsDBContentProvider.insert(ContactsDBContentProvider.java:79)
        at android.content.ContentProvider$Transport.insert(ContentProvider.java:265)
        at android.content.ContentResolver.insert(ContentResolver.java:1539)
        at com.example.projekat.tools.EmailsUtil.InitDB(EmailsUtil.java:23)
        at com.example.projekat.EmailsActivity.onCreate(EmailsActivity.java:73)
        at android.app.Activity.performCreate(Activity.java:7109)
        at android.app.Activity.performCreate(Activity.java:7100)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2758)


AndroidManifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.projekat">

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <service android:name=".sync.SyncSerivce" />

        <receiver android:name=".sync.SyncReciever" />

        <activity android:name=".MainActivity"></activity>
        <activity
            android:name=".SplashActivity"
            android:label="Splash">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".LogInActivity"
            android:label="Login activity" />
        <activity
            android:name=".ContactActivity"
            android:label="Contact"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
        <activity
            android:name=".CreateContactActivity"
            android:label="Create contact"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
        <activity
            android:name=".ContactsActivity"
            android:label="Contacts"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
        <activity
            android:name=".ProfileActivity"
            android:label="Profile"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
        <activity
            android:name=".SettingsActivity"
            android:label="Settings"
            android:parentActivityName=".MainActivity"></activity>
        <activity
            android:name=".FolderActivity"
            android:label="Folder"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
        <activity
            android:name=".FoldersActivity"
            android:label="Folders"
            android:parentActivityName=".EmailsActivity" />
        <activity
            android:name=".EmailActivity"
            android:label="Email"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
        <activity
            android:name=".EmailsActivity"
            android:label="Emails"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
        <activity
            android:name=".CreateFolderActivity"
            android:label="Create folder"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
        <activity
            android:name=".CreateEmailActivity"
            android:label="Create Email"
            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
        <provider
            android:authorities="com.example.projekat"
            android:name="com.example.projekat.database.ContactsDBContentProvider"
            android:exported ="false"/>
        <provider
            android:authorities="com.example.projekat"
            android:name="com.example.projekat.database.EmailsDBContentProvider"
            android:exported ="false"/>

    </application>

</manifest>







public class EmailsDBContentProvider extends ContentProvider {


    private EmailsSQLiteHelper database;

    private static final int EMAILS = 11;
    private static final int EMAILS_ID = 21;

    private static final String AUTHORITY = "com.example.projekat";



    private static final String EMAILS_PATH = "emails.db";

    public static final Uri CONTENT_URI_EMAILS = Uri.parse("content://" + AUTHORITY + "/" + EMAILS_PATH);

    private static final UriMatcher sURIMatcher = new UriMatcher(UriMatcher.NO_MATCH);

    static {
        sURIMatcher.addURI(AUTHORITY, EMAILS_PATH, EMAILS);
        sURIMatcher.addURI(AUTHORITY, EMAILS_PATH + "/#", EMAILS_ID);
    }

    @Override
    public boolean onCreate() {
        database = new EmailsSQLiteHelper(getContext());
        return true;
    }

    @Nullable
    @Override
    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {

        SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder();


        int uriType = sURIMatcher.match(uri);
        switch (uriType) {
            case EMAILS_ID:

                queryBuilder.appendWhere(EmailsSQLiteHelper.COLUMN_ID + "="
                        + uri.getLastPathSegment());

            case EMAILS:
                // Set the table
                queryBuilder.setTables(EmailsSQLiteHelper.TABLE_EMAILS);
                break;
            default:
                throw new IllegalArgumentException("Unknown URI: " + uri);
        }

        SQLiteDatabase db = database.getWritableDatabase();
        Cursor cursor = queryBuilder.query(db, projection, selection,
                selectionArgs, null, null, sortOrder);

        cursor.setNotificationUri(getContext().getContentResolver(), uri);

        return cursor;
    }

    @Nullable
    @Override
    public String getType(Uri uri) {
        return null;
    }

    @Nullable
    @Override
    public Uri insert(Uri uri, ContentValues values) {
        Uri retVal = null;
        int uriType = sURIMatcher.match(uri);
        SQLiteDatabase sqlDB = database.getWritableDatabase();
        long id = 0;
        switch (uriType) {
            case EMAILS:
                id = sqlDB.insert(EmailsSQLiteHelper.TABLE_EMAILS, null, values);
                retVal = Uri.parse(EMAILS_PATH + "/" + id);
                break;
            default:
                throw new IllegalArgumentException("Unknown URI: " + uri);
        }
        getContext().getContentResolver().notifyChange(uri, null);
        return retVal;
    }

    @Override
    public int delete(Uri uri, String selection, String[] selectionArgs) {
        int uriType = sURIMatcher.match(uri);
        SQLiteDatabase sqlDB = database.getWritableDatabase();
        long id = 0;
        int rowsDeleted = 0;
        switch (uriType) {
            case EMAILS:
                rowsDeleted = sqlDB.delete(EmailsSQLiteHelper.TABLE_EMAILS,
                        selection,
                        selectionArgs);
                break;
            case EMAILS_ID:
                String idEmails = uri.getLastPathSegment();
                if (TextUtils.isEmpty(selection)) {
                    rowsDeleted = sqlDB.delete(EmailsSQLiteHelper.TABLE_EMAILS,
                            EmailsSQLiteHelper.COLUMN_ID + "=" + idEmails,
                            null);
                } else {
                    rowsDeleted = sqlDB.delete(EmailsSQLiteHelper.TABLE_EMAILS, EmailsSQLiteHelper.COLUMN_ID + "=" + idEmails
                            + " and "
                            + selection, selectionArgs);
                }
                break;
            default:
                throw new IllegalArgumentException("Unknown URI: " + uri);
        }
        getContext().getContentResolver().notifyChange(uri, null);
        return rowsDeleted;
    }

    @Override
    public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
        int uriType = sURIMatcher.match(uri);
        SQLiteDatabase sqlDB = database.getWritableDatabase();
        long id = 0;
        int rowsUpdated = 0;
        switch (uriType) {
            case EMAILS:
                rowsUpdated = sqlDB.update(EmailsSQLiteHelper.TABLE_EMAILS,
                        values,
                        selection,
                        selectionArgs);
                break;
            case EMAILS_ID:
                String idEmails = uri.getLastPathSegment();
                if (TextUtils.isEmpty(selection)) {
                    rowsUpdated = sqlDB.update(EmailsSQLiteHelper.TABLE_EMAILS,
                            values,
                            EmailsSQLiteHelper.COLUMN_ID + "=" + idEmails,
                            null);
                } else {
                    rowsUpdated = sqlDB.update(EmailsSQLiteHelper.TABLE_EMAILS,
                            values,
                            EmailsSQLiteHelper.COLUMN_ID + "=" + idEmails
                                    + " and "
                                    + selection,
                            selectionArgs);
                }
                break;
            default:
                throw new IllegalArgumentException("Unknown URI: " + uri);
        }
        getContext().getContentResolver().notifyChange(uri, null);
        return rowsUpdated;
    }
}










public class EmailsSQLiteHelper extends SQLiteOpenHelper {


    public static final String TABLE_EMAILS = "Emails";
    public static final String COLUMN_ID = "id";
    public static final String COLUMN_OD = "od";
    public static final String COLUMN_DATETIME = "dateTime";
    public static final String COLUMN_SUBJECT = "Subject";
    public static final String COLUMN_CONTENT = "Content";
    public static final String COLUMN_AVATAR = "avatar";


    private static final String DATABASE_NAME = "emails.db";

    private static final int DATABASE_VERSION = 1;

    private static final String DB_CREATE = "create table "
            + TABLE_EMAILS + "("
            + COLUMN_ID  + " integer primary key autoincrement, "
            + COLUMN_OD  + " text, "
            + COLUMN_DATETIME + " text, "
            + COLUMN_SUBJECT + " text, "
            + COLUMN_CONTENT + " text, "
            + COLUMN_AVATAR + " integer "
            + ")";


    public EmailsSQLiteHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }


    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL(DB_CREATE);

    }


    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_EMAILS);
        onCreate(db);
    }

}

Re: java.lang.IllegalArgumentException: Unknown URI: content

Richard MacCutchan23-Jun-20 21:59

Richard MacCutchan

23-Jun-20 21:59

At a guess, since you have not shown where the error occurs, it is in the following block of your code:

Java

switch (uriType) {
    case EMAILS_ID:
    
        queryBuilder.appendWhere(EmailsSQLiteHelper.COLUMN_ID + "="
                + uri.getLastPathSegment());
        
    case EMAILS:
        // Set the table
        queryBuilder.setTables(EmailsSQLiteHelper.TABLE_EMAILS);
        break;
    default:
        throw new IllegalArgumentException("Unknown URI: " + uri);
}

So you need to find out what value is in the uriType variable, and why.

android

Member 148497851-Jun-20 0:31

Member 14849785

1-Jun-20 0:31

Hi everybody. I'm a new android learner I'm doing a project related to sqlite, I have 2 data sheets
a table contains folder names a table contains items 2 of these tables linked together by a foreign key. I don't know how to dis play folders and items on recyclview please help me Cry | :((

Re: android

David Crow5-Jun-20 2:43

David Crow

5-Jun-20 2:43

Member 14849785 wrote:
I don't know how to dis play folders and items on recyclview

Do you have an adapter bound to this view?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

I can't change lock screen wallpaper in my kotlin wallpaper app

VipulSh28-May-20 5:59

VipulSh

28-May-20 5:59

Here fl_iv is the frame layout containing the imageview which showcases the image. I have set up a button there which allows user to use the image as LOCK SCREEN wallpaper. id of that button is lock_screen. Please try to be descriptive as i am new to this language

I tried this code for lock screen but its not working.

Kotlin

lock_screen.setOnClickListener {
            val wpManager = WallpaperManager.getInstance(this)
            val myBitmap: Bitmap = fl_iv.drawToBitmap()
            try {
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                    wpManager.setBitmap(myBitmap, null, true, WallpaperManager.FLAG_LOCK)
                }
                else{
                    return@setOnClickListener
                }
            } catch (ex: IOException) {
                ex.printStackTrace()

            }
        }

Re: I can't change lock screen wallpaper in my kotlin wallpaper app

Richard MacCutchan28-May-20 6:22

Richard MacCutchan

28-May-20 6:22

VipulSh wrote:
but its not working

Unfortunately that does not explain what your problem is. Please edit your question and explain what happens when you run your code (assuming it is your code, and not something downloaded from the internet).

Re: I can't change lock screen wallpaper in my kotlin wallpaper app

VipulSh28-May-20 18:52

VipulSh

28-May-20 18:52

Yea i tried to write it according to android documentation. It does nothing. Not even an error. It just doesn't do anything. I want to click it and set my bitmap image as lock screen wallpaper but nothing happens. What i should change in it to make it work for me?

Re: I can't change lock screen wallpaper in my kotlin wallpaper app

Richard MacCutchan28-May-20 21:35

Richard MacCutchan

28-May-20 21:35

Sorry, no idea. The only way to find out what is happening is by using the debugger. Something in your code must be wrong, or using the system in the wrong way.

Re: I can't change lock screen wallpaper in my kotlin wallpaper app

VipulSh28-May-20 21:37

VipulSh

28-May-20 21:37

It would have been easier if logcat actually declared some error. but as no error is showing up idk whats happening

Re: I can't change lock screen wallpaper in my kotlin wallpaper app

Richard MacCutchan28-May-20 21:43

Richard MacCutchan

28-May-20 21:43

Have you actually stepped through the code in the debugger to see if it does make the call to wpManager.setBitmap? Also why are you not checking the return value from that call to see whether it succeeded or not?

Publishing A Xamarin Forms App

Kevin Marois8-May-20 8:57

Kevin Marois

8-May-20 8:57

I'm going to be starting a Xamarin Forms app for a client. There will be around 10 users, and I need to install and periodically update them. This app will NOT be for sale and NOT available to anyone outside their organization.

My question is, how do I publish the app? I found this page, and it mentions "Download from server", which seems like what I want, but there's no info on how to do that?

Can someone shed some light on this? Thanks

If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.

Re: Publishing A Xamarin Forms App

Richard Deeming10-May-20 22:04

Richard Deeming

10-May-20 22:04

Surely this page is closer to what you want?
Publishing Independently - Xamarin | Microsoft Docs[^]

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: Publishing A Xamarin Forms App

Kevin Marois12-May-20 6:14

Kevin Marois

12-May-20 6:14

THanks Richard. That was a lot of help.

Have you done this before? I have some questions and I keep getting stuck

If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.

Re: Publishing A Xamarin Forms App

Richard Deeming12-May-20 9:40

Richard Deeming

12-May-20 9:40

I haven't done any Xamarin yet, so I'm not likely to be able to provide much help. Smile | :)

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Problem in running Android app on IntelliJ IDEA

Pouria Polouk6-May-20 10:34

Pouria Polouk

6-May-20 10:34

Hello everyone.
In order to develop Android programms, I am using IntelliJ IDEA 2020 (x64) on Windows 10 that is running on Intel core 2 Duo processor.
To debug and run the app, I use the Nexus 5 hardware and Nougat x86 System Image (API Level 24).
Also I’ve checked Intel x86 Emulator Accelerator (HAXM Installer) in SDK Tools and enabled Virtualization Tech in System BIOS.
After running the app, Device is shown to me, but my app doesn’t exist in it and this message pops up:

Emulator: Warning: Quick Boot / Snapshots not supported on this machine. A CPU with EPT + UG features is currently needed. We will address this in a future release.

Please help me.

Re: Problem in running Android app on IntelliJ IDEA

Richard MacCutchan6-May-20 23:03

Richard MacCutchan

6-May-20 23:03

Pouria Polouk wrote:
We will address this in a future release.

What part of that message do you not understand?

Re: Problem in running Android app on IntelliJ IDEA

Pouria Polouk7-May-20 8:23

Pouria Polouk

7-May-20 8:23

All of the message!
And why doesn't the App run on my CPU?

Re: Problem in running Android app on IntelliJ IDEA

David Crow7-May-20 10:09

David Crow

7-May-20 10:09

Have you seen here?

Re: Problem in running Android app on IntelliJ IDEA

Pouria Polouk7-May-20 18:16

Pouria Polouk

7-May-20 18:16

Yes, unfortunately it doesn't work for me.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.