I am new bee trying to play with android sdk , I started with helloworld , next I am trying to use google picasa web api in sample app ,
here is my code
Code:
public class HelloAndroidActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv = new TextView(this);
setContentView(R.layout.main);
Button btn1 = (Button)findViewById(R.id.btnClickMe);
btn1.setOnClickListener(btnListener);
}
private OnClickListener btnListener = new OnClickListener()
{
public void onClick(View v)
{
try{
PicasawebService myService = new PicasawebService("exampleCo-exampleApp-1");
myService.setUserCredentials("[email protected]", "mypassword");
URL feedUrl = new URL("https://picasaweb.google.com/data/feed/api/user/myusername/albumid/myalbum");
AlbumFeed feed = myService.getFeed(feedUrl, AlbumFeed.class);
for(PhotoEntry photo : feed.getPhotoEntries()) {
System.out.println(photo.getTitle().getPlainText());
}
}catch (Exception e) {
throw new RuntimeException(e);
}
}
};
}
in onclick listner I am calling google api , whne the application is started and when I click the button I get unfortunately Helloandorid has stopped , no mexception nothing. Please advice me can I use google api in adroid app ?
Related
i wnat to use the random outside the method
plz help
Code:
public class asd2 extends Activity {
private Button Button01;
private Button Button02;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button01 = (Button) findViewById(R.id.Button01);
Button02 = (Button) findViewById(R.id.Button02);
final SeekBar seekBar01 = (SeekBar) findViewById(R.id.SeekBar01);
final Random anyrandom = new Random();
final EditText EditText01 = (EditText) findViewById(R.id.EditText01);
Button01.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// i need help to move to other activity in my app with this
// intent
Intent asdintenet = new Intent(this, secjavafile);
startActivity(asdintenet);
// this is the random i want to use (asdrandom)outside this
// method
int asdrandom = anyrandom.nextInt(30) + 1;
seekBar01.setProgress(asdrandom);
}
});
Button02.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
seekBar01
.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar,
int progress, boolean fromUser) {
/*
* I WANT to use the random here e.g
* EditText01.setText("progress is"+asdrandom);when i
* use progress int the app crash
*/
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
}
}
this file contains the project
as u c I'm beginner
i;ve solved one
i used string.valueof(progress)
any help with intent to other activity???
Question 1: Presumingly i wanted to allocate only 1GB of space to store my videos in a particular self declared directory how should i do it?
Question 2: And i wanted my directory to capped at 1GB after which how is it going to auto-delete the oldest video file in that directory once its about to reach 1GB?
Sorry i'm kinna new in java and android and currently creating an car blackbox app can someone help me... Thanks
This is what I have tried so far can someone tell me how should i implement the above function into my mainActivity:
Code:
public class CameraTest extends Activity implements SurfaceHolder.Callback {
private static final String TAG = "Exception";
public static SurfaceView surfaceView;
public static SurfaceHolder surfaceHolder;
public static Camera camera;
public static boolean previewRunning;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
surfaceView = (SurfaceView)findViewById(R.id.surface_camera);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
Button btnStart = (Button) findViewById(R.id.button4);
btnStart.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
startService(new Intent(getApplicationContext(), ServiceRecording.class));
}
});
Button btnStop = (Button) findViewById(R.id.button5);
btnStop.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
stopService(new Intent(getApplicationContext(), ServiceRecording.class));
}
});
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
camera = Camera.open();
if (camera != null) {
Camera.Parameters params = camera.getParameters();
camera.setParameters(params);
}
else {
Toast.makeText(getApplicationContext(), "Camera not available!", Toast.LENGTH_LONG).show();
finish();
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (previewRunning) {
camera.stopPreview();
}
Camera.Parameters p = camera.getParameters();
p.setPreviewSize(320, 240);
p.setPreviewFormat(PixelFormat.JPEG);
camera.setParameters(p);
try {
camera.setPreviewDisplay(holder);
camera.startPreview();
previewRunning = true;
}
catch (IOException e) {
Log.e(TAG,e.getMessage());
e.printStackTrace();
}
}
@Override
public void onResume(){
super.onResume();
}
@Override
public void surfaceDestroyed(SurfaceHolder holder){
camera.stopPreview();
previewRunning = false;
camera.release();
}
}
My RecordingService.java Service file
Code:
public class ServiceRecording extends Service {
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
private SurfaceView surfaceView;
private SurfaceHolder surfaceHolder;
private Camera camera;
private boolean recordingStatus;
private MediaRecorder mediaRecorder;
private final int maxDurationInMs = 20000;
private static final String TAG = "Exception";
@Override
public void onCreate() {
super.onCreate();
recordingStatus = false;
camera = CameraTest.camera;
surfaceView = CameraTest.surfaceView;
surfaceHolder = CameraTest.surfaceHolder;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
if (recordingStatus == false)
startRecording();
return START_STICKY;
}
@Override
public void onDestroy() {
super.onDestroy();
stopRecording();
//camera.stopPreview();
recordingStatus = false;
//camera.release();
}
public boolean startRecording(){
try {
Toast.makeText(getBaseContext(), "Recording Started", Toast.LENGTH_SHORT).show();
try{
camera.unlock();
}
catch(Exception e){
camera.reconnect();
}
mediaRecorder = new MediaRecorder();
mediaRecorder.setCamera(camera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
mediaRecorder.setMaxDuration(maxDurationInMs);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
//mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH_mm_ss");
Date date = new Date();
File directory = new File(Environment.getExternalStorageDirectory() + "/VideoList");
if(!(directory.exists()))
directory.mkdir();
File FileSaved = new File(Environment.getExternalStorageDirectory() + "/VideoList", dateFormat.format(date) + ".3gp");
mediaRecorder.setOutputFile(FileSaved.getPath());
mediaRecorder.setVideoSize(surfaceView.getWidth(),surfaceView.getHeight());
//mediaRecorder.setVideoFrameRate(videoFramesPerSecond);
mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface());
mediaRecorder.prepare();
mediaRecorder.start();
recordingStatus = true;
return true;
}
catch (IllegalStateException e) {
Log.d(TAG,e.getMessage());
e.printStackTrace();
return false;
}
catch (IOException e) {
Log.d(TAG,e.getMessage());
e.printStackTrace();
return false;
}
}
public void stopRecording() {
Toast.makeText(getBaseContext(), "Recording Stopped", Toast.LENGTH_SHORT).show();
mediaRecorder.stop();
try {
camera.reconnect();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
recordingStatus = false;
}
}
Anyone can help please...
I've tried my best to do my coding but i'm really in a desperate bit to get some help from you guys here... Could someone please help me, not that i'm lazy or what to do the coding myself but its just that i'm really bad in programming and new to android but yet force to do this project so decided to ask for help from you guys here...
I found this online but it seems that it answer part of my question isn't it but i don't seem to know how to integrate it into my codes... Can someone help me with this problem?
Code:
private static long dirSize(File dir) {
long result = 0;
Stack<File> dirlist= new Stack<File>();
dirlist.clear();
dirlist.push(dir);
while(!dirlist.isEmpty())
{
File dirCurrent = dirlist.pop();
File[] fileList = dirCurrent.listFiles();
for (int i = 0; i < fileList.length; i++) {
if(fileList[i].isDirectory())
dirlist.push(fileList[i]);
else
result += fileList[i].length();
}
}
return result;
}
Could someone guide me along with the above codes??
I'm trying to develop (for the liveview) using an SDK and need to get a bitmap of Google Maps.
Code:
//Map Section
public class myMap extends MapActivity {
MapView mapView;
Bitmap bitmap;
boolean created = false;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
createMap();
}
public void createMap()
{
// build map and mark point
mapView = new MapView(this, "keykeykeykeykeykey");
mapView.setBuiltInZoomControls(false);
GeoPoint point = new GeoPoint(52242730,-884211);
mapView.getController().animateTo(point);
mapView.preLoad();
// copy MapView to canvas
bitmap = Bitmap.createBitmap(400, 800, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
mapView.draw(canvas);
PluginUtils.sendTextBitmap(mLiveViewAdapter, mPluginId, "Loading Map...", 128, 12);
created = true;
}
public void displayMap()
{
if (created == false)
{
createMap();
}
//Display map on device
Bitmap mybit = Bitmap.createBitmap(128, 128, Bitmap.Config.ARGB_8888);
for(int i = 0; i < 128; i++)
{
for(int j = 0; j < 128; j++)
{
mybit.setPixel(i, j, bitmap.getPixel(i, j));
}
}
//white pixel for debugging
mybit.setPixel(64, 64, Color.WHITE);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
Is what I've got so far, the code in createMap() was in onCreate() but It didn't seem to be called.
Now it just force closes.
Anyone know how to help? Is there a better place to ask development questions?
Thanks.
-=Edit=-
Oh, and here's the routine calling the map thing, every couple of seconds.
Code:
private class Timer implements Runnable {
@Override
public void run() {
// TODO Auto-generated method stub
myMap theMap = new myMap();
theMap.displayMap();
}
}
Okay, looks like you cant use google street map like this.
Anyone looking for similar solution, I used open street map and downloaded 'slipery tiles' png's. They provide java routines for finding the tile url from lat/lon.
http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
I have two class activity that runs perfectly separately (ArduinoBlinkLEDActivity.java and ObjTrackActivity.java) .. I want to merge the two classes in one slass; i want to call the second class in the first one using the onclick activity buttonListener. i think that need to change layouts
please i need your help
ArduinoBlinkLEDActivity.java:
public class ArduinoBlinkLEDActivity extends Activity {
// TAG is used to debug in Android logcat console
private static final String TAG = "ArduinoAccessory";
@override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
while (connected) {
startService(new Intent(this, ArduinoBlinkLEDActivity.class));
}
iptext = (EditText) findViewById(R.id.ipserveur);
connexion = (Button) findViewById(R.id.button2);
deconnexion = (Button) findViewById(R.id.button1);
}
ObjTrackActivity.java :
public class ObjTrackActivity extends Activity {
private static final String TAG = "ObjTrackActivity";
public ObjTrackActivity() {
Log.i(TAG, "Instantiated new " + this.getClass());
}
/** Called when the activity is first created. */
@override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate");
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(new ObjTrackView(this));
}
ObjTrackView.java:
class ObjTrackView extends SampleViewBase {
private int mFrameSize;
private Bitmap mBitmap;
private int[] mRGBA;
public ObjTrackView(Context context) {
super(context);
}
my test that doesn't work: ArduinoBlinkLEDActivity.java:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
iptext = (EditText) findViewById(R.id.ipserveur);
connexion = (Button) findViewById(R.id.button2);
deconnexion = (Button) findViewById(R.id.button1);
Button btnNextScreen = (Button) findViewById(R.id.btnNextScreen);
//Listening to button event
btnNextScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
//Starting a new Intent
Log.i(TAG, "onCreate");
//super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(new ObjTrackView(this));
}
});
Hi, I am developping a home screen app, and I want only certain apps to be able tu be launched from my home screen.
I want to do it exactly like Surelock:
When the user tries to open an app that doesn't belong to my list of accepted apps, he should receive a toast saying something like example: "com.android.settings blocked by this app".
I need that type of security, I came across a piece of code on the web, but it does not work...
Could you help me out either by suggesting something new or by helping me understand and fix this one?
public class MonitorService extends Service {
private Handler handler;
Runnable runnable;
@override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
handler = new Handler();
runnable = new Runnable() {
@override
public void run() {
new Thread(new Runnable() {
@override
public void run() {
ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningTaskInfo> taskInfo = am
.getRunningTasks(1);
ComponentName componentInfo = taskInfo.get(0).topActivity;
String currentActivityName=componentInfo.getClassName();
String packageName=componentInfo.getPackageName();
if(whitelist.contains(currentActivityName)){
Intent launchIntent = new Intent();
launchIntent.setComponent(new ComponentName(blockActivityPackageName,
blockActivityName));
launchIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(launchIntent);
}
}
}).start();
handler.postDelayed(this, 1000);
}
};
handler.postDelayed(runnable, 1000);
}
@override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
}
@override
public IBinder onBind(Intent intent) {
return null;
}
@override
public void onDestroy() {
super.onDestroy();
Intent intent = new Intent(this, MonitorService.class);
startService(intent);
}
@override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}}