import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
public class Second extends AppCompatActivity {
TextView t1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
t1 = (TextView)findViewById(R.id.textView);
Bundle b = getIntent().getExtras();
String S = b.getString("key1");
t1.setText(S);
try {
wait(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
Intent i2 = new Intent();
i2.putExtra("reply","Everything is cool");
setResult(RESULT_OK,i2);
finish();
}
}
This is my second Activity code. Actually, I was seeing how intent works by implementing a very basic program. Program is working without wait, but the app is crashing if I put wait function. provide me some way so that i can stay on to the second activity for a longer time before sending back the r
Use Handler and try to start Intent from run() You can check below example,
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
Intent i2 = new Intent();
i2.putExtra("reply","Everything is cool");
setResult(RESULT_OK,i2);
finish();
}
}, 3000);
you can use service or acyncTask instead of
try {
wait(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
You could try this code
public void onclick(View v) {
mt = new MyTask();
mt.execute();
}
class MyTask extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected Void doInBackground(Void... params) {
try {
TimeUnit.SECONDS.sleep(2);
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
}
}
Hope it will be helpful.
Related
currently I'm programming an Android application and I'm using timer for my splash. instead of using timer I want to use handle but I can't integrate that to my code:
package com.tesbih;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
public class Splash extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Thread timer = new Thread(){
public void run(){
try{
sleep(5000);
}catch(InterruptedException e){
e .printStackTrace();
}finally{
Intent openStartingPoint = new Intent ("com.tesbih.TESBIHMAINACTIVITY");
startActivity(openStartingPoint);
}
}
};
timer.start();
}
}
public class Splash extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
final Intent openStartingPoint = new Intent(this, TESBIHMAINACTIVITY);
new Handler().postDelayed(new Runnable(){
#Override
public void run() {
startActivity(openStartingPoint);
finish();
}
}, 5000);
}
}
At first my splash screen works perfectly, however later I tried to put in a code which would destroy the activity splash. I did this by putting the onPause method into the end of the protected void.
This is the splash screen before putting in the method
'package com.shipment.emulatorfix;
'import android.app.Activity;
'import android.content.Intent;
'import android.media.MediaPlayer;
'import android.os.Bundle;
'public class Splash extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Thread timer = new Thread(){
public void run(){
try{
sleep(5000);
} catch(InterruptedException e){
e.printStackTrace();
}finally{
Intent openMain = new Intent("android.intent.action.TESTINGEMULATORACTIVITY");
startActivity(openMain);
}
}
};
timer.start();
}
'}
this is the after code
'package com.shipment.emulatorfix;
'import android.app.Activity;
'import android.content.Intent;
'import android.media.MediaPlayer;
'import android.os.Bundle;
'public class Splash extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Thread timer = new Thread(){
public void run(){
try{
sleep(5000);
} catch(InterruptedException e){
e.printStackTrace();
}finally{
Intent openMain = new Intent("android.intent.action.TESTINGEMULATORACTIVITY");
startActivity(openMain);
}
}
};
timer.start();
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
finish();
}
'}
Any help would be greatly appreciated, thank you.
try this
public class SplashScreen extends Activity {
protected int _splashTime = 2000;
private Thread splashTread;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
splashTread = new Thread() {
#Override
public void run() {
try {
synchronized(this) {
wait(_splashTime);
}
} catch(InterruptedException e) {
System.out.println("EXc=" + e);
}
finally {
startActivity(new Intent(SplashScreen.this, Login.class ));
//stop();
finish();
}
}
};
splashTread.start();
}
}
public class Welcome extends Activity
{
/** Called when the activity is first created. */
Handler mHandler,actHandler;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome);
new Thread(){
public void run(){
try{
Thread.sleep(3000);
}
catch(Exception ex){
Log.e("Welcome Exception :",ex.toString());
}
try{
Message msg=mHandler.obtainMessage();
mHandler.sendMessage(msg);
}
catch(NullPointerException ex){
Log.e("Handler Exception :",ex.toString());
}
}
}.start();
mHandler=new Handler(){
public void handleMessage(Message msg){
super.handleMessage(msg);
Intent i=new Intent(Welcome.this,M_chat.class);
startActivity(i);
finish();
}
};
}
}
Finish the activity and then start the other activity.
Thread timer = new Thread(){
public void run(){
try{
sleep(5000);
} catch(InterruptedException e){
e.printStackTrace();
}finally{
finish();
Intent openMain = new Intent("android.intent.action.TESTINGEMULATORACTIVITY");
startActivity(openMain);
}
}
};
This should work for you.
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Thread timer = new Thread() {
public void run() {
try {
sleep(5000);
} catch(InterruptedException e){
e.printStackTrace();
} finally {
Intent openMain = new Intent("android.intent.action.TESTINGEMULATORACTIVITY");
startActivity(openMain);
Splash.this.finish();
}
}
};
timer.start();
}
I would like to implement a SplashScreen in my app. I found the best and easiest way is to launch an activity that shows a layout with an image view at the launch of the app and then adding android:noHistory="true" attribute to the manifest.
Now, how do I set the splashscreen activity to launch the MainActivity class after a certain amount of time? Lets say 2 seconds?
This is my splashscreen activity
public class SplashActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splashscreen);
}
}
use
handler.postDelayed(runnable, delayinmilliseconds(2000 in your case));
final Runnable runnable = new Runnable()
{
public void run()
{
//start the new activity here.
}
};
Here is a complete sample.
package com.test.splash;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.ImageView;
public class splash extends Activity {
private static final int STOPSPLASH = 0;
//time in milliseconds
private static final long SPLASHTIME = 3000;a
private ImageView splash;
//handler for splash screen
private Handler splashHandler = new Handler() {
/* (non-Javadoc)
* #see android.os.Handler#handleMessage(android.os.Message)
*/
#Override
public void handleMessage(Message msg) {
switch (msg.what) {
case STOPSPLASH:
//remove SplashScreen from view
splash.setVisibility(View.GONE);
break;
}
super.handleMessage(msg);
}
};
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
splash = (ImageView) findViewById(R.id.splashscreen);
Message msg = new Message();
msg.what = STOPSPLASH;
splashHandler.sendMessageDelayed(msg, SPLASHTIME);
}
}
public class TrackMyMoneyActivity extends Activity {
//member fields
private ProgressBar pbar = null;
private TextView counter_txt = null;
Thread splash_thread = null;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
pbar = (ProgressBar) findViewById(R.id.splashpbar);
counter_txt = (TextView) findViewById(R.id.countertxt);
//define thread
splash_thread = new Thread(new Runnable() {
#Override
public void run() {
// TODO Auto-generated method stub
int i = 0;
for( i=0;i<100;i++){
pbar.setProgress(i);
// counter_txt.setText(i+" %");
try {
splash_thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(i==100){
Intent intent = new Intent(getBaseContext(), LoginApp.class);
startActivity(intent);
}
}
});
splash_thread.start();
}
#Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
}
}
I hope it will be solved your solution.
You can also use java.util.Timer in this way:
new Timer().schedule(new TimerTask(){
public void run() {
startActivity(new Intent(SplashActivity.this, MainActivity.class));
}
}, 2000 /*amount of time in milliseconds before execution*/ );
public class Splashscreen extends Activity
{
private static final int SPLASH_TIME = 10 * 1000;// 3 seconds
Button logo;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// requestWindowFeature(Window.FEATURE_NO_TITLE);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.splashscreen);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
try {
new Handler().postDelayed(new Runnable() {
public void run() {
Intent intent = new Intent(Splashscreen.this,MainActivity.class);
startActivity(intent);
Splashscreen.this.finish();
//overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
}
}, SPLASH_TIME);
new Handler().postDelayed(new Runnable() {
public void run() {
}
}, SPLASH_TIME);
} catch(Exception e){}
// METHOD 1
/****** Create Thread that will sleep for 5 seconds *************/
Thread background = new Thread() {
public void run() {
try {
// Thread will sleep for 5 seconds
sleep(50*1000);
// After 5 seconds redirect to another intent
Intent i=new Intent(getBaseContext(),MainActivity.class);
startActivity(i);
//Remove activity
finish();
} catch (Exception e) {
}
}
};
background.start();
}
How to display another activity?
I want to display one activity which has one Image View splash displaying an image. I want to display that just for 5 seconds then move on to another activity.splash is displaying in emulator but another activity menu is not displaying.
Here is my code:
com.basic.android;
import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
public class androidbasics extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
}
public void toCallActivity() {
TimerTask startNewActivity;
final Handler handler = new Handler();
final Timer timer = new Timer();
startNewActivity = new TimerTask() {
#Override
public void run() {
// TODO Auto-generated method stub
handler.post(new Runnable() {
public void run() {
try {
timer.cancel();
startActivity(new Intent(androidbasics.this,menu.class));
} catch (Exception e) {
// TODO Auto-generated catch block
}
}
});
}
};
timer.schedule(startNewActivity, 0,5000);
}
}
You didn't call toCallActivity().So your new Activity is not coming in the front.Write like this.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
toCallActivity();
}
try this ....
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
BackgroundTask b = new BackgroundTask();
b.execute("Main");
}
/** Called when the activity is first created. */
class BackgroundTask extends AsyncTask<String , Void, Void>
{
#Override
protected void onPreExecute()
{
setContentView(R.layout.splash);
}
#Override
protected Void doInBackground(String... params)
{
// TODO Auto-generated method stub
int pause=5000;
int interval =1000;
int counter=0;
while(counter<pause)
{
try
{
Thread.sleep(interval);
counter+=interval;
}
catch(Exception e)
{
System.out.println(e);
}
}
return null;
}
#Override
protected void onPostExecute(Void result)
{
startActivity( new Intent(androidbasics.this,menu.class));
androidbasics.this.finish();
}
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Thread splashTread = new Thread() {
#Override
public void run() {
try {
int waited = 0;
while(_active && (waited < _splashTime)) {
sleep(100);
if(_active) {
waited += 100;
}
}
}
catch(InterruptedException e)
{
} finally {
finish();
startActivity(new Intent(firstactivity.class,secondActivity.class));
stop();
}
}
};
splashTread.start();
}
My app have a splash activity
It must display at least 5 seconds
But in this activity I have another thread to sync data from internet
Sync process may take more than 5 seconds or less than 5 second.
If less than 5 seconds, the Handler should wait until fifth second
If more then 5 seconds, the Handler should wait until process complete
How to make the Handler wait another thread?
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
syncFromInternet(); // another thread may over 5 seconds
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent intent;
intent = new Intent(getApplicationContext(), SecondActivity.class);
startActivity(intent);
}
}, 5000);
}
You have to make just simple logic Like
When handler completes then check for completion of syncFromInternet method, if it completed open main Activity
When syncFromInternet completes then check for completion of handler, if it completed open main Activity.
Above explanation in code:
boolean isHandlerCompleted = false, isAsyncCompleted = false;
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
isHandlerCompleted = true;
if (isHandlerCompleted && isAsyncCompleted) {
openMainActivity();// both thread completed
}
}
}, 5000);
// in your async task add this condition when it completes its task
isAsyncCompleted = true;
if (isHandlerCompleted && isAsyncCompleted) {
openMainActivity();// both thread completed
} // till this line
// make this function to open main activity
openMainActivity() {
Intent intent = new Intent(getApplicationContext(), SecondActivity.class);
startActivity(intent);
}
You can use an AsyncTask instance and measure the time for syncing with the remote server. If the time is greater than 5 minutes, start the new activity, otherwise - wait till the 5th second:
#Override
protected void onCreate(Bundle savedInstanceState) {
...
AsyncTask<Void, Void, Void> asyncTask = new AsyncTask<Void, Void, Void>() {
private static final long FIVE_SECONDS = 5 * 1000;
private volatile Date mStartTime;
#Override
protected void onPreExecute() {
mStartTime = new Date();
}
#Override
protected Void doInBackground(Void... params) {
// Do the syncing here
syncFromInternet();
Date now = new Date();
long execTime = now.getTime() - mStartTime.getTime();
if(execTime < FIVE_SECONDS) {
Thread.sleep(FIVE_SECONDS - execTime);
}
return null;
}
#Override
protected void onPostExecute(Void result) {
Intent intent = new Intent(...);
startActivity(intent);
finish();
}
};
asyncTask.execute(null, null);
}
You can use this code :
package com.example.untitled;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import java.io.File;
import java.io.IOException;
public class MyActivity extends Activity {
private volatile boolean isAvailable = false;
private volatile boolean isOver = false;
private Handler messageHandler = new Handler() {
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case 0:
if (isOver) {
Log.e("messageHandler","isOver");
transitToNewActivity();
}else {
Log.e("messageHandler","isOver false");
}
break;
}
}
};
/**
* Called when the activity is first created.
*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
syncFromInternet(); // another thread may over 5 seconds
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
isOver = true;
Log.e("mainHandler", "Main handler expired");
if (isAvailable) {
transitToNewActivity();
Log.e("mainHandler", "isAvailable");
}else {
Log.e("mainHandler","isAvailable false");
}
}
}, 50000);
public void transitToNewActivity() {
Log.e("transitToNewActivity","Activity transited");
Intent intent;
intent = new Intent(getApplicationContext(), SecondActivity.class);
startActivity(intent);
}
public void syncFromInternet() {
Thread thread = new Thread(new Runnable() {
#Override
public void run() {
try {
Thread.sleep(80000);
isAvailable = true;
messageHandler.sendEmptyMessage(0);
Log.e("syncFromInternet", "internet data synced");
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
thread.start();
}
}
and please modify it according to your requirement.
you should implement AsyncTask so that this will wait untill your syncFromInternet() is completed.
private class BackgroundSplashTask extends AsyncTask {
#Override
protected void onPreExecute() {
super.onPreExecute();
// show progressbar
}
#Override
protected Object doInBackground(Object[] params) {
try {
syncFromInternet(); // sync in background
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Object o) {
super.onPostExecute(o);
// dismiss progressbar
Intent intent = new Intent(getApplicationContext(), SecondActivity.class);
startActivity(intent); // go to SecondActivity after syncFromInternet is completed
finish();
}
}
Call your handler inside syncFromInternet() after execution of thread.