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R cannot be resolved to a variable


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Check your xml files in Eclipse Graphical Editor and fix problems.

r-cannot-be-resolved-android

Check project setup, right click on project, select properties, Java build path and
select correct Android version etc.
order-and-export-eclipse-android-project

Right click on project, Android Tools, Fix Project Properties

Menu Eclipse select Project ->Clean.

397LW NO topic_id




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Další témata ....(Topics)


106

Statistics usability of mobile phones with Android - September 2011 | statistics-usability-of-mobile-phones-with-android-september-2011


(Our software)

 
1Samsung Galaxy S213.8% (1,232)
2Samsung Galaxy S8.5% (762)
3Samsung Galaxy Tab7.4% (659)
4Samsung Galaxy Mini5.4% (483)
5Samsung Galaxy S4.0% (356)
6HTC Desire HD3.8% (341)
7Samsung Galaxy Ace3.8% (339)
8HTC Wildfire3.2% (286)
9Samsung Galaxy Fit3.1% (274)
10SEMC Xperia X102.1% (190)
161

Append text and ad text to TextView Android example | append-text-and-ad-text-to-textview-android-example



String s = "Some text for appending

"; TextView mTitle = (TextView) findViewById(R.id.title_text); mTitle.setText(R.string.app_name); // insert text from strings.xml mTitle.append(s); // append string like a variable value mTitle.append("My string will appended
"); // append string

You can insert this source code into onCreate in your activity file
128

How get Drawable Android example | how-get-drawable-android-example


InputStream, getResources(),openRawResource()

 java.io.InputStream is;
is = context.getResources().openRawResource(R.drawable.my_image);

Drawable mDrawable = context.getResources().getDrawable(R.drawable.button);
mDrawable.setBounds(150, 20, 300, 100);


Drawable[] mDrawables;
int[] resIDs = new int[] {
                R.drawable.btn_ok,
                R.drawable.btn_storno,
                R.drawable.btn_help
            };
            mDrawables = new Drawable[resIDs.length];
            Drawable prev = mDrawable;
            for (int i = 0; i < resIDs.length; i++) {
                mDrawables[i] = context.getResources().getDrawable(resIDs[i]);
                mDrawables[i].setDither(true);
                addToTheRight(mDrawables[i], prev);
                prev = mDrawables[i];
            }


24

Sqlite create database and table with BAT file for Android | sqlite-create-database-and-table-with-bat-file


Sqlite3 create database and table with load.bat file and fill data to table example.


  1. Create folder for your project: my_sqlite_project

  2. Open folder and create file load.bat and paste to load.bat this text and save to project folder:


    sqlite3 my_database.s3db < load_text.sql
    pause



  3. Create load_text.sql file and paste this text and save to project folder:

    CREATE TABLE [android_metadata] (
    [locale] TEXT
    );




    CREATE TABLE [my_table] (
    [_id] int NULL,
    [word] VARCHAR(255) NULL,
    [description] VARCHAR(255) NULL




    .separator ";"
    .import text_file.txt my_table


  4. Create text_file.txt and paste this text and save it as UTF-8:

    1;word1;my first word
    2;word2; my second word



  5. Download sqlite3.exe and put to project folder.

  6. Run BAT file load.bat and read text instruction from console

  7. If database created you can open and edit this with sqlite database explorer

  8. Copy database to Asses Android project folder

  9. If you want using this database in Android application on device, you have to copy this database to folder on device /data/data/com.MyPackage/databases/









286

Eclipse - Workspace in use or cannot be created chose a different one | eclipse-workspace-in-use-or-cannot-be-created-chose-a-different-one


Open your workspace folder and subfolder .metadata:
C:\Users\workspace\.metadata\

Delete .lock file


Editace: 2014-02-15 20:14:31
Počet článků v kategorii: 397
Url:r-cannot-be-resolved-to-a-variable

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