at java.util.Arrays$ArrayList.get(Arrays.java:75)
Problem in Android application:
Solution: check code for set and get selection
E/AndroidRuntime(416): FATAL EXCEPTION: main
E/AndroidRuntime(416): java.lang.IndexOutOfBoundsException
E/AndroidRuntime(416): at java.util.Arrays$ArrayList.get(Arrays.java:75)
E/AndroidRuntime(416): at android.widget.ArrayAdapter.getItem(ArrayAdapter.java:298)
E/AndroidRuntime(416): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:351)
E/AndroidRuntime(416): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:323)
E/AndroidRuntime(416): at android.widget.Spinner.makeAndAddView(Spinner.java:192)
E/AndroidRuntime(416): at android.widget.Spinner.layout(Spinner.java:151)
E/AndroidRuntime(416): at android.widget.Spinner.onLayout(Spinner.java:115)
Solution: check code for set and get selection
// Spinner _spin1 contain only 49 items
// you can set max 48 ( range 0 - 48)
// 50 is IndexOutOfBoundsException
_spin1.setSelection(50);
396LW NO topic_id
AD
Další témata ....(Topics)
boolean fc(boolean b) {
return b;
}// end fc
boolean bA = true;
boolean bB = true;
boolean bC = bA || bB; // true
bA = true;
bB = false;
bC = bA || bB; // true
bA = false;
bB = true;
bC = bA || bB; // true
bA = false;
bB = false;
bC = bA || bB; // false
if(!fc(bB||bA))
System.out.println("false"); // false
else
System.out.println("true");
Check if in drawable folder have two picture with same name and delete one.
For example:
Check the module build folder in Android Studio for two files with same names.
For example:
image_1.jpg
image_1.png
Check the module build folder in Android Studio for two files with same names.
C:\Users\myFolder\AndroidStudioProjects\Project\yourModule\build\intermediates\res\merged\debug\drawable\
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new SampleView(this));
}
private static Bitmap codec(Bitmap src, Bitmap.CompressFormat format,
int quality) {
ByteArrayOutputStream os = new ByteArrayOutputStream();
src.compress(format, quality, os);
byte[] array = os.toByteArray();
return BitmapFactory.decodeByteArray(array, 0, array.length);
}
private static class SampleView extends View {
// CONSTRUCTOR
public SampleView(Context context) {
super(context);
setFocusable(true);
}
@Override
protected void onDraw(Canvas canvas) {
Paint paint = new Paint();
canvas.drawColor(Color.YELLOW);
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.flower_blue);
Bitmap bPNGcompress = codec(bmp, Bitmap.CompressFormat.PNG, 0);
int h = bmp.getHeight();
canvas.drawBitmap(bmp, 10,10, paint);
canvas.drawBitmap(bPNGcompress, 10,10 + h + 10, paint);
}
}
}
Canvas, drawCircle(), Paint, onDraw(), setStrokeWidth(), setStyle()
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new SampleView(this));
}
private static class SampleView extends View {
// CONSTRUCTOR
public SampleView(Context context) {
super(context);
setFocusable(true);
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawColor(Color.CYAN);
Paint p = new Paint();
// smooths
p.setAntiAlias(true);
p.setColor(Color.RED);
p.setStyle(Paint.Style.STROKE);
p.setStrokeWidth(4.5f);
// opacity
//p.setAlpha(0x80); //
canvas.drawCircle(50, 50, 30, p);
}
}
}
How install Android emulator on PC
//developer.android.com/sdk/installing.html
Download links:
Java Development Kit JDK download
Eclipse download
Android SDK download
//developer.android.com/sdk/installing.html
Download links:
Java Development Kit JDK download
Eclipse download
Android SDK download