Shuffle array int string Java Android
String [] arOfStrings = {"one", "two", "three"};
List<String> mListOfStrings = new ArrayList<String>(Arrays.asList(arOfStrings));
Collections.shuffle(mListOfstrings);
String str = mListOfStrings.get(2);// 2 is index of pozition an element
int [] arOfInt = {1, 2, 3};
List<Integer> mListOfInt = new ArrayList<Integer>(Arrays.asList(arOfInt));
Collections.shuffle(mListOfInt);
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Basic difference remember it!!!
if(TRUE && TRUE && TRUE) return TRUE otherwise FALSE
if(FALSE || FALSE || FALSE) return FALSE otherwise TRUE
Logical operator and &&
If all conditions/operands is TRUE return TRUE, otherwise return FALSE
Logical operator or ||
The logical OR operator (||) returns the boolean value true if either or both operands is true and returns false otherwise.
If one operands is TRUE, condition is TRUE:
rev
if(TRUE && TRUE && TRUE) return TRUE otherwise FALSE
if(FALSE || FALSE || FALSE) return FALSE otherwise TRUE
Logical operator and &&
If all conditions/operands is TRUE return TRUE, otherwise return FALSE
if( true and true and true){
// return true - do something
}
int a = 6;
if(a == 6 && a == 6 ) {
// if TRUE
// true && true return true, do something
}
if(a == 6 && a == 5){
// nothing, not attended
}else{
// true && false return false, or false && false return false
// do something
}
Logical operator or ||
The logical OR operator (||) returns the boolean value true if either or both operands is true and returns false otherwise.
If one operands is TRUE, condition is TRUE:
if(FALSE OR FALSE OR TRUE) return TRUE
if(FALSE OR TRUE OR FALSE) return TRUE
if(FALSE OR FALSE OR FALSE) return FALSE
int a = 6;
if(a==6 || a==5){ // TRUE || FALSE return TRUE
//if return TRUE
//one from operadns is TRUE return true, do something
}
if(a==5 || a==4){ // FALSE || FALSE return FALSE
// not attended
}else{
//if return FALSE, do something
}
rev
choreographer skipped frames
Create filter with TAG regex to disable Choreographer messages, see code and picture below:

Create filter with TAG regex to disable Choreographer messages, see code and picture below:
^((?!Choreographer).)*$

How to change the image dynamically in ImageView and button setOnClickListener Android sample.
Main.java
main.xml
Put into res/drawable this pictures:
Main.java
ipackage cz.okhelp.my_game;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class Main extends Activity {
private ImageView hImageViewSemafor;
private Button hButton;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
hImageViewSemafor = (ImageView)findViewById(R.id.idImageViewSemafor);
hButton = (Button) findViewById(R.id.idBtnChangeImage);
hButton.setOnClickListener(mButtonChangeImageListener);
}
View.OnClickListener mButtonChangeImageListener = new OnClickListener() {
public void onClick(View v) {
// setImageResource will change image in ImageView
hImageViewSemafor.setImageResource(R.drawable.semafor_green);
}
};
}
main.xml
Put into res/drawable this pictures:


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<ImageView
android:src="@drawable/semafor_red"
android:id="@+id/idImageViewSemafor"
android:background="#66FFFFFF"
android:adjustViewBounds="true"
android:maxWidth="47dip"
android:maxHeight="91dip"
android:padding="10dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
1.) Try delete some apps from Android emulator (can from Eclipse DDMS perspective
- File Explorer tab - data/apps folder path )
2.) Try resize emulator internal storage or SD card storage to hight size
3.)Try add to AndroidManifest.xml android:installLocation="preferExternal"
4.) Try resize particion from Eclipse
Preferences,
select Android- Launch
Add "-partition-size 1024" into "Default emulator option” field.
Click "Apply” and use your emulator as usual
- File Explorer tab - data/apps folder path )
2.) Try resize emulator internal storage or SD card storage to hight size
3.)Try add to AndroidManifest.xml android:installLocation="preferExternal"
<manifest xmlns:android="//schemas.android.com/apk/res/android"
package="com.myweb.mypackage"
android:installLocation="preferExternal"
4.) Try resize particion from Eclipse
Preferences,
select Android- Launch
Add "-partition-size 1024" into "Default emulator option” field.
Click "Apply” and use your emulator as usual
Set in AndroidManifest.xml android:theme="@android:style/Theme.NoTitleBar" AndroidManifest.xml example source code.
AndroidManifest.xml
AndroidManifest.xml
<manifest xmlns:android="//schemas.android.com/apk/res/android"
package="com.myexample.without_titlebar">
<application android:label="My app">
<activity android:name="NoTitleBar"
android:theme="@android:style/Theme.NoTitleBar"
android:screenOrientation="portrait"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Editace: 2013-12-09 11:05:54
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Url:shuffle-array-int-string-java-android