Okhelp.cz

Recepty, články, nápady, programování. Dříve dum-zahrada, finance, internet a know-how.okhelp.cz Pro lepší výsledky hledání používejte i diakritiku.

Is NaN isNaN isInfinite number value Java Android example


AD MOB

float, double is NaN isNaN() isInfinite() Java Android example.

float f = 0.f;
boolean bIsNaN = Float.isNaN(f);
boolean bIsInfinite = Float.isInfinite(f);

 double d = Math.sqrt(-10);
 boolean b = Double.isNaN(d);


397LW NO topic_id




AD

Další témata ....(Topics)


354

Start Activity from list - launches other activities from list | start-activity-from-list-launches-other-activities-from-list


Activities launcher

public class MainActivity extends ListActivity {
    private class Sample {
        private CharSequence title;
        private Class<? extends Activity> activityClass;

        public Sample(int titleResId, Class<? extends Activity> activityClass) {
            this.activityClass = activityClass;
            this.title = getResources().getString(titleResId);
        }

        @Override
        public String toString() {
            return title.toString();
        }
    }

    private static Sample[] mSamples;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Instantiate the list of samples.
        mSamples = new Sample[]{
                new Sample(R.string.title_first_app, FirstActivity.class),
                new Sample(R.string.title_second_app, SecondActivity.class),
                new Sample(R.string.title_third_app, ThirdActivity.class),
        };

        setListAdapter(new ArrayAdapter<Sample>(this,
                android.R.layout.simple_list_item_1,
                android.R.id.text1,
                mSamples));
    }

    @Override
    protected void onListItemClick(ListView listView, View view, int position, long id) {
        // Launch the sample associated with this list position.
        startActivity(new Intent(MainActivity.this, mSamples[position].activityClass));
    }
}

265

Whittled superscript sup tag TextView Android issue | whittled-superscript-sup-tag-textview-android-issue


Issue: Cropped superscript index between tags sup /sup is not correctly visible in TextView or View as Button.

String s = "10<sup>12 </sup>";
textView.setText(Html.fromHtml(s)); // 12 will cropped 
// solution:
s = "10<sup>12 </sup>\t	"; // add behind ending of sup tag the tabulator \t, 
// but not char \t but only press to TAB key!!! in source code
textView.setText(Html.fromHtml(s)); // 12 is visible correctly


textview-superscript-issue
124

Resource int R.string.app_name to String Android example | resource-int-r-string-app_name-to-string-android-example


R.string.app_name to String example.
MyActivity.java

Resources res = getResources();
String sText = res.getString(R.string.app_name);


res/values/string.xml


<resources>
    <string name="app_name">My app name</string>
</resources>

154

Create own custom Title Bar TitleBar with a Icon Android example | create-own-custom-title-titlebar-android-example


onCreate in MainActivity.java

    @Override
	protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
        setContentView(R.layout.main.xml);
        getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);
}


You can add to titlebar different Views by xml file.
custom_title.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="//schemas.android.com/apk/res/android" android:id="@+id/screen"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:orientation="vertical">
    <TextView android:id="@+id/left_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:text="Some text" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
       
        android:src="@drawable/ic_launcher" />
    
</RelativeLayout>





custom-title-titlebar-android
179

Samsung Galaxy S | samsung-galaxy-s


Samsung Galaxy S nejlepší cena od 4 500 KCZ Kč (únor.2012)
Samsung Galaxy S je chytrý telefon s operačním systémem Android.
Samsung Galaxy S je (22.února2012) 5. a 6. nejpoužívanějším chytrým telefonem u programu Sky Map viz tabulka.


Samsung Galaxy S byl představen firmou Samsung v březnu 2010. Je vybaven 1 GHz ARM "Hummingbird - kolibřík" procesorem, 8-16 GB interní flash pamětí, 4-palcovým 480 × 800 pixelů Super AMOLED kapacitním dotykovým displejem, Wi-Fi připojením, 5-megapixelovým fotoaparátem s maximálním rozlišením 2560x1920 a u vybraných modelů předním čelním 0,3 MP fotoaparátem VGA (640x480).

Samsung Galaxy S photo pic image
samsung galaxy s2
Zdroj obrázku: wikipedia


Editace: 2013-12-09 10:38:25
Počet článků v kategorii: 397
Url:is-nan-isnan-java-example

AD
11 Share
Share
Tweet