Iterate over each Entry in Map Java Android
AD MOB
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();
}
397LW NO topic_id
AD
Další témata ....(Topics)
Multiple substitutions specified in non-positional format;did you mean to add the formatted="false" attribute?
Wiktionary, WiktionarySimple
location C:\documents\WiktionarySimple\res\values\strings.xml
Issue:
Solution:
Wiktionary, WiktionarySimple
location C:\documents\WiktionarySimple\res\values\strings.xml
Issue:
<string name="template_user_agent">"%s/%s (Linux; Android)"</string>
<string name="template_wotd_title">"Wiktionary:Word of the day/%s %s"</string>
<string name="template_define_url">"//en.wiktionary.org/wiki/%s"</string>
Solution:
<string name="template_user_agent" translatable="false">"%1$s/%2$s (Linux; Android)"</string>
<string name="template_wotd_title">"Wiktionary:Word of the day/%1$s %2$s"</string>
<string name="template_define_url" translatable="false">"//en.wiktionary.org/wiki/%s"</string>
Problemi is in e.getMessage() what can return null and Log.e (String tag, String msg) will throws an new exception !!!!
Problem and solution:
LogCat:
Or you can using this code:
Problem and solution:
try {
int [] i = {1};
int z = i[5];
} catch (ArrayIndexOutOfBoundsException e) {
String s = e.toString(); // s == java.lang.ArrayIndexOutOfBoundsException
// try to testing String s for null value
if(s != null)
Log.e("bla", s);
else
Log.e("bla", "My error text 1");
String s2 = e.getMessage(); // s2 == null !!!!!!!
// you need to testing String s2 for null value , or you get FATAL EXCEPTION: main
// and application will be crashed
String s2 = e.getMessage(); // s2 == null !!!!!!!
if(s2 != null)
Log.e("bla2", e.getMessage());
else
Log.e("bla2", "My error text 2");
// this is OK
e.printStackTrace();
}
LogCat:
E/bla(855): java.lang.ArrayIndexOutOfBoundsException
E/bla2(855): My error text 2
W/System.err(855): java.lang.ArrayIndexOutOfBoundsException
W/System.err(855): at cz.okhelp.motion._MotionActivity.onTouchEvent(_MotionActivity.java:54)
W/System.err(855): at android.app.Activity.dispatchTouchEvent(Activity.java:2099)
W/System.err(855): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1675)
W/System.err(855): at android.view.ViewRoot.deliverPointerEvent(ViewRoot.java:2194)
W/System.err(855): at android.view.ViewRoot.handleMessage(ViewRoot.java:1878)
W/System.err(855): at android.os.Handler.dispatchMessage(Handler.java:99)
W/System.err(855): at android.os.Looper.loop(Looper.java:123)
W/System.err(855): at android.app.ActivityThread.main(ActivityThread.java:3683)
W/System.err(855): at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err(855): at java.lang.reflect.Method.invoke(Method.java:507)
W/System.err(855): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
W/System.err(855): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
W/System.err(855): at dalvik.system.NativeStart.main(Native Method)
Or you can using this code:
try {
int [] i = {1};
int z = i[5];
} catch (Exception e) {
StringBuilder sb = new StringBuilder().append(e.getClass().getSimpleName());
if (e.getMessage() != null) {
sb.append("
");
sb.append(e.getMessage());
}
Log.e("err", sb.toString()); // E/err(336): ArrayIndexOutOfBoundsException
// this code write out all message
Log.e("myError", "methodName", e);
}
// E/myError(371): methodName
// E/myError(371): java.lang.ArrayIndexOutOfBoundsException
// E/myError(371): at cz.okhelp.motion._MotionActivity.onTouchEvent(_MotionActivity.java:54)
// E/myError(371): at android.app.Activity.dispatchTouchEvent(Activity.java:2099)
// E/myError(371): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1675)
// E/myError(371): at android.view.ViewRoot.deliverPointerEvent(ViewRoot.java:2194)
// E/myError(371): at android.view.ViewRoot.handleMessage(ViewRoot.java:1878)
// E/myError(371): at android.os.Handler.dispatchMessage(Handler.java:99)
// E/myError(371): at android.os.Looper.loop(Looper.java:123)
// E/myError(371): at android.app.ActivityThread.main(ActivityThread.java:3683)
// E/myError(371): at java.lang.reflect.Method.invokeNative(Native Method)
// E/myError(371): at java.lang.reflect.Method.invoke(Method.java:507)
// E/myError(371): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
// E/myError(371): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
// E/myError(371): at dalvik.system.NativeStart.main(Native Method)
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);
}
}
HorizontalScrollView ScrollView LinearLayout horizontal vertical Android xml basic example and image.
[caption id="attachment_889" align="alignleft" width="200" caption="horizontal scrollview horizontalscrollview android"]
[/caption]
Other sample
[caption id="attachment_889" align="alignleft" width="200" caption="horizontal scrollview horizontalscrollview android"]
[/caption]
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
android:layout_width="fill_parent" android:layout_height="fill_parent"
xmlns:android="//schemas.android.com/apk/res/android">
// horizontal and vertical Scrollview
<ScrollView android:id="@+id/ScrollView01"
android:layout_height="135px" android:layout_width="wrap_content"
android:scrollbars="horizontal|vertical">
// HorizontalScrollview
<HorizontalScrollView android:id="@+id/HorizontalScrollView01"
android:layout_height="fill_parent" android:layout_width="wrap_content">
<LinearLayout android:id="@+id/LinearLayout02"
android:layout_width="wrap_content" android:orientation="vertical"
android:layout_height="fill_parent">
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:layout_weight="1">
<TextView android:text="red" android:gravity="center_horizontal"
android:background="#aa0000" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
<TextView android:text="green" android:gravity="center_horizontal"
android:background="#00aa00" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
<TextView android:text="blue" android:gravity="center_horizontal"
android:background="#0000aa" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
<TextView android:text="yellow" android:gravity="center_horizontal"
android:background="#aaaa00" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
</LinearLayout>
<LinearLayout android:orientation="vertical"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:layout_weight="1">
<TextView android:text="row one" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView android:text="row two" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView android:text="row three" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView android:text="row four" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
</HorizontalScrollView>
</ScrollView>
</LinearLayout>
Other sample
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/layout"
android:orientation="vertical" >
<HorizontalScrollView
android:id="@+id/horizontalScrollView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Hello world! First TextView" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
1.) Try reopen the Emulaor and restart Eclipse.
OR
2.) Try to delete AVD from Eclipse menu Window - AVD manager.
OR
3.) Insert into manifest.xml this source code.
OR
2.) Try to delete AVD from Eclipse menu Window - AVD manager.
OR
3.) Insert into manifest.xml this source code.
<manifest xmlns:android="//schemas.android.com/apk/res/android"
package="com.myweb.mypackage"
android:installLocation="preferExternal"
Editace: 2013-03-02 12:06:08
Počet článků v kategorii: 397
Url:iterate-over-each-entry-in-map-java-android
AD
