Random number Java
Generate random number Android Java example source code.
Random rand = new Random();
int i = rand.nextInt() % 256; // range -255 +255
System.out.print(i + "
"); // -184
i = Math.abs(rand.nextInt() % 12); // range 0 +11
System.out.print(i); // 7
// Math.random() start with 0. e.g. 0.35981234
int nRan = (int) (Math.random()*10); // 0 - 10
// nextDouble(), nextFloat(), nextInt(), nextLong() returns 0 - 10
import java.util.Random;´
Random r = new Random();
int nRan = r.nextInt(); // 0 - 10
double dRan = r.nextDouble() * 10; // e.g. 7.496285271597397
nextDouble – return 0 - 1
nextFloat – same as double
nextInt – -2147483648 +2147483647
nextLong – -922337203685775808 +9223372036854775807
nextGaussian – 0.0 aberation 1.0.
396LW NO topic_id
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Další témata ....(Topics)
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"
}
Errors:
E/Ads(333): The android:configChanges value of the com.google.ads.AdActivity must include screenLayout.
E/Ads(333): The android:configChanges value of the com.google.ads.AdActivity must include uiMode.
E/Ads(333): The android:configChanges value of the com.google.ads.AdActivity must include screenSize.
E/Ads(333): The android:configChanges value of the com.google.ads.AdActivity must include smallestScreenSize.
E/Ads(333): You must have AdActivity declared in AndroidManifest.xml with configChanges.
Solution:
Try to using a lower version of the GoogleAdMobAdsSDK ADS SDK in project:
GoogleAdMobAdsSDK-4.0.4
How add SDK to project
Add activity to AndroidManifest.xml
E/Ads(333): The android:configChanges value of the com.google.ads.AdActivity must include screenLayout.
E/Ads(333): The android:configChanges value of the com.google.ads.AdActivity must include uiMode.
E/Ads(333): The android:configChanges value of the com.google.ads.AdActivity must include screenSize.
E/Ads(333): The android:configChanges value of the com.google.ads.AdActivity must include smallestScreenSize.
E/Ads(333): You must have AdActivity declared in AndroidManifest.xml with configChanges.
Solution:
Try to using a lower version of the GoogleAdMobAdsSDK ADS SDK in project:
GoogleAdMobAdsSDK-4.0.4
How add SDK to project
Add activity to AndroidManifest.xml
// .............. blah
<uses-sdk android:minSdkVersion="4"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application android:icon="@drawable/dicts_ico" android:label="@string/app_name"
>
<meta-data
android:value="a12345_your_number"
android:name="ADMOB_PUBLISHER_ID" />
<activity android:name=".MainStartMenu"
android:label="@string/app_name"
android:configChanges="keyboardHidden|orientation"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- Google ads -->
<activity android:name="com.google.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation"/>
// ......... blah
Context context = getApplicationContext();
Drawable drawable = context.getResources().getDrawable(R.drawable.my_image);
// convert drawable to bitmap
Bitmap bitmap = ((BitmapDrawable)drawable).getBitmap();
// convert bitmap to drawable
Drawable d = new BitmapDrawable(bitmap);
Android example source code.
No resource found that matches the given name - error examples.
Exist resource file?
Is code written correctly?
Exist resource file?
Is code written correctly?
// No resource found that matches the given name (at id with value @id/myButton).
android:id="@id/myButton" // invalid id notation
android:id="@+id/myButton" // correct
// No resource found that matches the given name
// (at icon with value @drawable/icons).
// exist file icons in res/drawable folder?
<application android:icon="@drawable/icons"
//No resource found that matches the given name
//(at theme with value @style/MyThem).
<activity android:name=".Main"
android:label="@string/app_name"
android:theme="@style/MyThem">
// Exist style MyThem in styles.xml ? No only MyTheme
<style name="MyTheme" parent="android:Theme">
<item name="android:windowTitleSize">50px</item>
</style>
// exist file my_background in folder drawable ?
android:background="@drawable/my_background" //
// no resource found that matches the given name(at "label" with value "@string/app_name")
// have you the string resource defined in res/values/strings.xml ?
<string name="app_name">"My App"</string>
Constructor SimpleCursorAdapter is deprecated.
If using api 11 and above, you can try add last parameter 0.
If using api 11 and above, you can try add last parameter 0.
Cursor cursor = managedQuery(...........,,,,);
// Specify the columns we want to display in the result
String[] from = new String[] { KEY_WORD,
KEY_DEFINITION };
// Specify the corresponding layout elements where we want the columns to go
int[] to = new int[] { R.id.word,
R.id.definition };
// deprecated
SimpleCursorAdapter words =
new SimpleCursorAdapter(this,
R.layout.result, cursor, from, to);
// working
SimpleCursorAdapter words =
new SimpleCursorAdapter(this,
R.layout.result, cursor, from, to, 0); // to, 0!!!!
//working in Fragment
SimpleCursorAdapter mAdapter = new SimpleCursorAdapter(getActivity(),
android.R.layout.simple_list_item_2, null,
new String[] { "name", "age" }, // cursor parameters
new int[] { android.R.id.text1, android.R.id.text2 }, 0);
Editace: 2013-12-09 10:54:07
Počet článků v kategorii: 396
Url:random-number-java