AlertDialog - MessageBox - Alert - Toast - Android sample
AlertDialog like MessageBox by WinApi:
If error: Unable to add window -- token null is not for an application
try change get Context.
If error: Unable to add window -- token null is not for an application
try change get Context.
// you can put this text into some function body or case in switch statement
new AlertDialog.Builder(this)
.setMessage("Hello boys!!!")
.setPositiveButton("OK", null)
.show();
Context context = getApplicationContext();
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("Select font size");
final CharSequence[] chsSize= { "Small", "Medium", "Large"};
builder.setSingleChoiceItems(chsSize, 0 /*sel.item*/,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
Toast.makeText(context, "Hello from dialog!!!", Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
396LW NO topic_id
AD
Další témata ....(Topics)
Open your workspace folder and subfolder .metadata:
C:\Users\workspace\.metadata\
Delete .lock file
C:\Users\workspace\.metadata\
Delete .lock file
Error: No Launcher activity found!
The launch will only sync the application package on the device!
Android emulator not showing the app
Workaround:
Check AndroidManifest.xml for MAIN and LAUNCHER. MyActivity.java is first Activity what will opened if .apk is installed.
The launch will only sync the application package on the device!
Android emulator not showing the app
Workaround:
Check AndroidManifest.xml for MAIN and LAUNCHER. MyActivity.java is first Activity what will opened if .apk is installed.
<application android:label="@string/app_name" android:icon="@drawable/icon">
<activity android:name="MyActivity"
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>
////www.apache.org/licenses/LICENSE-2.0
private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private ColorMatrix mCM = new ColorMatrix();
private Bitmap mBitmap;
private float mSaturation;
private float mAngle;
//..........
mBitmap = BitmapFactory.decodeResource(context.getResources(),
R.drawable.my_image);
//..........
private static void setContrastScaleOnly(ColorMatrix cm, float contrast) {
float scale = contrast + 1.f;
float translate = (-.5f * scale + .5f) * 255.f;
cm.set(new float[] {
scale, 0, 0, 0, 0,
0, scale, 0, 0, 0,
0, 0, scale, 0, 0,
0, 0, 0, 1, 0 });
}
private static void setContrast(ColorMatrix cm, float contrast) {
float scale = contrast + 1.f;
float translate = (-.5f * scale + .5f) * 255.f;
cm.set(new float[] {
scale, 0, 0, 0, translate,
0, scale, 0, 0, translate,
0, 0, scale, 0, translate,
0, 0, 0, 1, 0 });
}
private static void setContrastTranslateOnly(ColorMatrix cm, float contrast) {
float scale = contrast + 1.f;
float translate = (-.5f * scale + .5f) * 255.f;
cm.set(new float[] {
1, 0, 0, 0, translate,
0, 1, 0, 0, translate,
0, 0, 1, 0, translate,
0, 0, 0, 1, 0 });
}
@Override protected void onDraw(Canvas canvas) {
Paint paint = mPaint;
float x = 20;
float y = 20;
canvas.drawColor(Color.WHITE);
paint.setColorFilter(null);
canvas.drawBitmap(mBitmap, x, y, paint);
ColorMatrix cm = new ColorMatrix();
mAngle += 2;
if (mAngle > 180) {
mAngle = 0;
}
//convert our animated angle [-180...180] to a contrast value of [-1..1]
float contrast = mAngle / 180.f;
setContrast(cm, contrast);
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(mBitmap, x + mBitmap.getWidth() + 10, y, paint);
setContrastScaleOnly(cm, contrast);
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(mBitmap, x, y + mBitmap.getHeight() + 10, paint);
setContrastTranslateOnly(cm, contrast);
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(mBitmap, x, y + 2*(mBitmap.getHeight() + 10),
paint);
invalidate();
}
}
| Brand | Samsung |
| Model (codename) | Galaxy Mini (S5570) |
| Price (cena, včetně DPH) | 3500 / 06.2012 |
| Display size in Inch (v palcích) | 3.14 |
| Display-resolution | 240x320 |
| Dotek-typ | kapacitní |
| CPU typ | MSM7227 |
| CPU MHz | 600 |
| CPU core | |
| L2 cache | yes |
| RAM | 256 |
| ROM | 512 |
| GPU | Adreno 200 |
| NenaMark2 Benchmark | |
| GPU-GLBenchmark | |
| Baterie mAh | 1200 |
| Foto MPx | 3 |
| Autofocus | no |
| Video | QVGA (320 x 240) při 15 frames/s |
| Official Android ICS | Android Froyo 2.2 |
| CyanogenMod support | yes |
| Dotek-prstů-max | Dual-touch (two fingers) |
| Display-ppi | 127 |
| Display-retina | 39% |
| Networks | GSM&EDGE (850 / 900 / 1.800 / 1.900 MHz) 3G (900 / 2.100 MHz) |
| Connectivity | Bluetooth V2.1 , USB V2.0 , USB mass storage , SyncML(DM) , WIFI , AGPS, 3.5 mm jack |
| Note |
Samsung S5570 Galaxy Mini - image
Basic difference remember it!!!
if(TRUE && TRUE && TRUE) return TRUE otherwise FALSE
if(FALSE || FALSE || FALSE) return FALSE otherwise TRUE
Logical operator and &&
If all conditions/operands is TRUE return TRUE, otherwise return FALSE
Logical operator or ||
The logical OR operator (||) returns the boolean value true if either or both operands is true and returns false otherwise.
If one operands is TRUE, condition is TRUE:
rev
if(TRUE && TRUE && TRUE) return TRUE otherwise FALSE
if(FALSE || FALSE || FALSE) return FALSE otherwise TRUE
Logical operator and &&
If all conditions/operands is TRUE return TRUE, otherwise return FALSE
if( true and true and true){
// return true - do something
}
int a = 6;
if(a == 6 && a == 6 ) {
// if TRUE
// true && true return true, do something
}
if(a == 6 && a == 5){
// nothing, not attended
}else{
// true && false return false, or false && false return false
// do something
}
Logical operator or ||
The logical OR operator (||) returns the boolean value true if either or both operands is true and returns false otherwise.
If one operands is TRUE, condition is TRUE:
if(FALSE OR FALSE OR TRUE) return TRUE
if(FALSE OR TRUE OR FALSE) return TRUE
if(FALSE OR FALSE OR FALSE) return FALSE
int a = 6;
if(a==6 || a==5){ // TRUE || FALSE return TRUE
//if return TRUE
//one from operadns is TRUE return true, do something
}
if(a==5 || a==4){ // FALSE || FALSE return FALSE
// not attended
}else{
//if return FALSE, do something
}
rev
Editace: 2011-10-27 20:09:56
Počet článků v kategorii: 396
Url:alertdialog-like-messagebox-android-sample
