LinkedMap HashMap Java
AD MOB
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
396LW NO topic_id
AD
Další témata ....(Topics)
Click Handler Android Java example source code. Open new class as activity and open URL in browser.
In layout.xml file:
In string.xml
In MainClass.java file
In layout.xml file:
android:layout_height="wrap_content" android:onClick="@string/clickHandler">
In string.xml
myClickHandler
In MainClass.java file
public void myClickHandler(View view) {
switch (view.getId()) {
// open new class as activity
case R.id.btnOpenClass: {
Intent pictureActivity = new Intent(getBaseContext(),
MyClass.class);
startActivity(pictureActivity);
}
break;
case R.id.btnAbout: {
//aboutDialogCreate();
}
break;
// open url
case R.id.btnHome: {
String url = "//android.okhelp.cz/";
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
}break;
}
}// end myClickHandler
// listener .. if click on button will scrolling to mTextView bottom
private OnClickListener mButtonListener = new OnClickListener() {
public void onClick(View v) {
// do something when the button is clicked
int nBottom = mTextView.getBottom();
hScrollView.scrollTo(0, nBottom);
}
};
WakeLock, PowerManager,uses-permission Android sample.
Main.java
AndroidManifest.xml
Main.java
public class Main extends Activity {
private SensorManager mSensorManager;
private PowerManager mPowerManager;
private WindowManager mWindowManager;
private WakeLock mWakeLock;
private Button button;
private TextView textView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try{
// Get an instance of the SensorManager
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
// Get an instance of the PowerManager
mPowerManager = (PowerManager) getSystemService(POWER_SERVICE);
// Get an instance of the WindowManager
mWindowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
mWindowManager.getDefaultDisplay();
// Create a bright wake lock
mWakeLock = mPowerManager.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, getClass()
.getName());
setContentView(R.layout.main);
textView = (TextView)findViewById(R.id.textView1);
button = (Button)findViewById(R.id.button1);
button.setOnClickListener(mButtonStopListener);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e("onCreate", e.getMessage());
}
} // END onCreate
View.OnClickListener mButtonStopListener = new OnClickListener() {
public void onClick(View v) {
try {
mWakeLock.release();
textView.setText("mWakeLock.release()");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e("onPause",e.getMessage());
}
}
};
@Override
protected void onResume() {
super.onResume();
/*
* when the activity is resumed, we acquire a wake-lock so that the
* screen stays on, since the user will likely not be fiddling with the
* screen or buttons.
*/
try {
mWakeLock.acquire();
textView.setText("mWakeLock.acquire()");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e("onResume", e.getMessage());
}
}
@Override
protected void onPause() {
super.onPause();
// and release our wake-lock
try {
mWakeLock.release();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e("onPause",e.getMessage());
}
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="//schemas.android.com/apk/res/android"
package="cz.okhelp.Main"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" />
<uses-permission android:name="android.permission.HARDWARE_TEST"></uses-permission>
<uses-permission android:name="android.permission.VIBRATE"></uses-permission>
<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".ScreenBrightnessActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Get assets folder files to array of strings.
Its show files in assets folder and sub folders:
Its show files in assets folder and sub folders:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final AssetManager assetManager = getAssets();
try {
// for assets folder add empty string
String[] filelist = assetManager.list("");
// for assets/subFolderInAssets add only subfolder name
String[] filelistInSubfolder = assetManager.list("subFolderInAssets");
if (filelist == null) {
// dir does not exist or is not a directory
} else {
for (int i=0; i<filelist.length; i++) {
// Get filename of file or directory
String filename = filelist[i];
}
}
// if(filelistInSubfolder == null) ............
} catch (IOException e) {
e.printStackTrace();
}
}
Activities launcher
public class MainActivity extends ListActivity {
private class Sample {
private CharSequence title;
private Class<? extends Activity> activityClass;
public Sample(int titleResId, Class<? extends Activity> activityClass) {
this.activityClass = activityClass;
this.title = getResources().getString(titleResId);
}
@Override
public String toString() {
return title.toString();
}
}
private static Sample[] mSamples;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Instantiate the list of samples.
mSamples = new Sample[]{
new Sample(R.string.title_first_app, FirstActivity.class),
new Sample(R.string.title_second_app, SecondActivity.class),
new Sample(R.string.title_third_app, ThirdActivity.class),
};
setListAdapter(new ArrayAdapter<Sample>(this,
android.R.layout.simple_list_item_1,
android.R.id.text1,
mSamples));
}
@Override
protected void onListItemClick(ListView listView, View view, int position, long id) {
// Launch the sample associated with this list position.
startActivity(new Intent(MainActivity.this, mSamples[position].activityClass));
}
}
How install Android emulator on PC
//developer.android.com/sdk/installing.html
Download links:
Java Development Kit JDK download
Eclipse download
Android SDK download
//developer.android.com/sdk/installing.html
Download links:
Java Development Kit JDK download
Eclipse download
Android SDK download
Editace: 2013-12-09 13:05:22
Počet článků v kategorii: 396
Url:linkedmap-hashmap-java
AD