Get Context Java Android example
getContext() getApplicationContext() method Java Android example source
Context myContext_1 = ThisClassName.this; // to open a Dialog
Context myContext_2 = getContext();
Context myContext_3 = this.getContext();
Context myContext_4 = this;
Context myContext_5 = this.getApplicationContext ();
OnClickListener getImageBtnOnClick = new OnClickListener() {
public void onClick(View view) {
Context context = view.getContext();
}
};
// Toast
Toast.makeText(getApplicationContext(), "Context == getApplicationContext "
, Toast.LENGTH_SHORT).show();
// store Context in public class
public class MyActivity extends Activity {
public static Context myCnt = null;
...
protected void onCreate(Bundle icicle) {
...
myCnt = this;
MyStorage.setContext(myCnt);
// or
// MyStorage.setContext(this);
// cntxFromStorage == this
Context cntxFromStorage = MyStorage.getContext();
...
};
};
public class MyStorage
{
private static Context cntStorageContext = null;
public static Context getContext() {
return cntStorageContext;
}
public static void setContext(Context context) {
MyStorage.cntStorageContext = context;
}
};
class DataBaseHelper extends SQLiteOpenHelper {
// get MyActivity context
Context cnt = MyStorage.getContext();
}
396LW NO topic_id
AD
Další témata ....(Topics)
ACRA allows your Android application to send Crash Reports to various destinations:
a Google Docs spreadsheet (default and original behavior)
an email
your own server-side HTTP POST script
any other possible destination by implementing your own report sender
ACRA wiki and download page of project library
a Google Docs spreadsheet (default and original behavior)
an email
your own server-side HTTP POST script
any other possible destination by implementing your own report sender
ACRA wiki and download page of project library
Nejlepší Smartphone jaro 2012.
Pdf file
Video - záznam a kvalita videa HTC One S
**VIDEO YOUTUBE
Brand | HTC |
---|---|
Model (codename) | One S |
Price - (Cena, včetně DPH) | 13000 |
Display size in Inch (v palcích) | 4.3 |
Display-resolution (rozlišení) | 960x540 |
Dotek-typ | multi-touch capacitive |
CPU typ | MSM8260A |
CPU MHz | 1500 |
CPU core | 2 |
L2 cache | |
ROM | 16 GB |
RAM | 1 GB |
GPU | Adreno 225 |
NenaMark2 Benchmark | |
GPU-GLBenchmark | |
Battery mAh | 1650 mAh, 10.5 hours of talk time and 13.2 days of stand-by time |
Foto MPx | 8 |
Autofocus | AF |
Video | HD záznam videa, 1920×1080 (1080p HD) @ 30 frame/s - 3GP, .3G2, MP4, WMV, AVI |
Official Android ICS | Android 4.0 Ice Cream Sandwich, HTC Sense 4.0 overlay |
CyanogenMod support | |
Dotek-prstů-max | |
Display-ppi | |
Display-retina | |
Network | HSPA/WCDMA: • Europe/Asia: 850/900/2100 MHz GSM/GPRS/EDGE: • 850/900/1800/1900 MHz |
Connectivity | 3.5 mm stereo audio jack Bluetooth with aptX™ enabled (Bluetooth® 4.0) Wi-Fi®: IEEE 802.11b/g/n DLNA® for wirelessly streaming media from the phone to a compatible TV or computer micro-USB 2.0 (5-pin) port with mobile high-definition video link (MHL) for USB or HDMI connection (Special cable required for HDMI connection.) |
Pozn. |
Pdf file
Video - záznam a kvalita videa HTC One S
**VIDEO YOUTUBE
If you change android:versionCode="224" and android:versionName="2.2.4" in AndroidManifest.xml you have to change this in build.gradle file too.
Click on build.gradle in package explorer tree change your new version name and code:
Click on build.gradle in package explorer tree change your new version name and code:
defaultConfig {
applicationId "cz.okhelp.pocasiwidget"
minSdkVersion 11
targetSdkVersion 23
versionCode 224
versionName "2.2.4"
}
// solution 1
ImageView imageView = (ImageView)findViewById(R.id.myimage);
imageView.setImageDrawable(null);
// or
imageView.setImageResource(0);
// solution 2 hide ImageView
imageView.setVisibility(View.INVISIBLE);
// solution 3 resize ImageView 0, 0
hImageViewSemafor.setLayoutParams(new LinearLayout.LayoutParams(0,0));
Map<Float,String> linkedHashMap = new LinkedHashMap<Float, String>();
linkedHashMap.put(14.f, "text");
linkedHashMap.put(13.f, "text");
linkedHashMap.put(10.f, "text");
linkedHashMap.put(11.f, "text");
linkedHashMap.put(2.f, "text");
linkedHashMap.put(3.f, "text");
linkedHashMap.put(1.f, "text");
linkedHashMap.put(7.f, "text");
linkedHashMap.put(23.f, "text");
for (Entry<Float,String> entry : linkedHashMap.entrySet()) {
System.out.println(entry.getKey());
}
14.0
13.0
10.0
11.0
2.0
3.0
1.0
7.0
23.0
Map<Float,String> hashMap = new HashMap<Float, String>();
hashMap.put(14.f, "text");
hashMap.put(13.f, "text");
hashMap.put(10.f, "text");
hashMap.put(11.f, "text");
hashMap.put(2.f, "text");
hashMap.put(3.f, "text");
hashMap.put(1.f, "text");
hashMap.put(7.f, "text");
hashMap.put(23.f, "text");
for (Entry<Float,String> entry : hashMap.entrySet()) {
System.out.println(entry.getKey());
}
// key :
1.0
14.0
3.0
13.0
2.0
7.0
11.0
23.0
10.0
Editace: 2011-10-15 08:31:19
Počet článků v kategorii: 396
Url:get-context-java-android-example