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Accessibility Missing contentDescription attribute on image


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Android Emulator warning:[Accessibility] Missing contentDescription attribute on image

Workaround example code:
android:contentDescription="@string/desc"

            <ImageView
                android:id="@+id/imageViewOil"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
            android:contentDescription="@string/desc"
                android:layout_alignParentLeft="true"
                android:layout_centerVertical="true"
                android:layout_marginLeft="84dp"
                android:src="@drawable/tank_silver" />

397LW NO topic_id




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Call requires permission which may be rejected by user | call-requires-permission-which-may-be-rejected-by-user


Call requires permission which may be rejected by user: code should explicitly check to see if permission is available (with `checkPermission`) or explicitly handle a potential `SecurityException`




try {
// your code for example: 
//  LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);         
//  Criteria criteria = new Criteria();
//        provider = locationManager.getBestProvider(criteria, false);
//  locationManager.requestLocationUpdates(provider, 400, 1, this);
        } catch (SecurityException e) {
            e.printStackTrace();
        }


239

Admob ads not visible on emulator Android 4.1 | admob-ads-not-visible-on-emulator-android-4-1


If you using GoogleAdMobAdsSdk-4.0.4.jar in your project and set android:targetSdkVersion="17" in AndroidManifest.xml , ads will not visible on emulator with Android 4.0.3 or 4.1.
You have to set as android:targetSdkVersion="17"


<uses-sdk android:minSdkVersion="4" 
        android:targetSdkVersion="17" />


Update project.properties file - row with target to 17:

# Project target.
target=android-17
64

Leap year date time Java Android example | leap-year-date-time-java-android-example


GregorianCalendar cal = new GregorianCalendar(); Boolean b = cal.isLeapYear(2012); // true, Android example.



public class MainActivity extends Activity {
TextView txtV;
	Context cntx;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        txtV = (TextView)findViewById(R.id.idLabel);
        cntx = this;
        StringBuilder strBuild = new StringBuilder();
        
         GregorianCalendar cal = new GregorianCalendar();
         Boolean b = cal.isLeapYear(2012); // true
         strBuild.append("Is leap year 2012? " + b + "

"); b = cal.isLeapYear(2014); // false strBuild.append("Is leap year 2014? " + b + "
"); txtV.setText(strBuild); } }
261

Iterate over each Entry in Map Java Android | iterate-over-each-entry-in-map-java-android


entry put iterate Map HashMap Java Android

Map<String, Integer> map = new HashMap<String, Integer>();
map.put("key27", 27);
for (Map.Entry<String, Integer> entry : map.entrySet())
{
 String str = entry.getKey();
 int n = entry.getValue();
}
19

How set focus on View Android development example | how-set-focus-on-view-android-development-example


Set focus on a View in Android application example source code for Button, EditText, View, TextView, isFocused(), requestFocus() .


// set focus on Button Android example
 private Button mRightButton;
 mRightButton = (Button) a.findViewById(R.id.rightButton);
 mRightButton.requestFocus();
// boolean isFocused() 
boolean b = mRightButton.isFocused(); // true or false

// set focus on TextView directly Android example
((TextView) findViewById(R.id.myText)).requestFocus();

// set focus on View Android example
private View mView;
mView = findViewById(R.id.showAll);
mView.requestFocus();

// set focus on EditText Android example
private EditText mEdit;
mEdit = (EditText)findViewById(R.id.myEdit);
mEdit.requestFocus();


Editace: 2014-02-15 20:28:50
Počet článků v kategorii: 397
Url:accessibility-missing-contentdescription-attribute-on-image

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