Whats Wron with this? If I start the app it crashes instantly
It's only a Test app the name only is about what I plan to do in the future^^
Code:
package de.cwsurf.sorry.improvedBattery;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class ImprovedBatteryActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
EditText eT = (EditText) findViewById(R.id.editText1);
eT.setText("Test");
eT.setText(eT.getText()+"\nTest1\nTest2\nTest3\nTest4");
setContentView(eT);
final Button button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on click
EditText eT = (EditText) findViewById(R.id.editText1);
eT.setText(eT.getText()+"\nTest1\nTest2\nTest3\nTest4");
setContentView(eT);
}
});
}
}
problem solved. i only need to leave this away: setContentView(eT);
Related
Hello XDA,
So I've not found anyone properly discussing this. If they do, please link me to the page and don't flame
I've been making an app for my school and so far, I've been doing alright. But now I have run into a problem which seems to be very hard to solve for me alone.
Namely, I have an EditText and a Button in one Activity and a WebView as a different Activity.
I'm trying to get the EditText String into the WebView URL (String being variable, Button initiating the WebView), but get a lot of errors, some not even related to that.
I would really appreciate it if someone could have a look at the code and help me with this
MyWebView.java:
Code:
package bas.sie.Antonius;
import android.app.Activity;
import android.os.Bundle;
import android.widget.EditText;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MyWebView extends Activity {
WebView mWebView;
EditText mEtxtStudentNum;
static String StudentNumFromHome = bas.sie.Antonius.Home.StudentNum;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
mWebView = (WebView) findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setWebViewClient(new WebViewClient());
mWebView.loadUrl("http://carmelcollegegouda.nl/site_ant/roosters/standaardroosters/Lee1_" + StudentNumFromHome + ".htm");
}
}
Home.java (Homescreen):
Code:
package bas.sie.Antonius;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class Home extends Activity {
Button mBtnStSchedule;
static EditText mEtxtStudentNum;
static final String StudentNum = mEtxtStudentNum.getText().toString();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button next = (Button) findViewById(R.id.BtnStSchedule);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), MyWebView.class);
startActivityForResult(myIntent, 0);
}
});
// TODO Auto-generated method stub
}
}
AntoniusActivity.java (Main):
Code:
package bas.sie.Antonius;
import android.app.TabActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TabHost;
public class AntoniusActivity extends TabActivity {
WebView mWebView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Resources res = getResources(); // Resource object to get Drawables
TabHost tabHost = getTabHost(); // The activity TabHost
TabHost.TabSpec spec; // Resusable TabSpec for each tab
Intent intent; // Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent = new Intent().setClass(this, Home.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("home").setIndicator("Home",
res.getDrawable(R.drawable.ic_tab_home))
.setContent(intent);
tabHost.addTab(spec);
// Do the same for the other tabs
intent = new Intent().setClass(this, External.class);
spec = tabHost.newTabSpec("external").setIndicator("External",
res.getDrawable(R.drawable.ic_tab_external))
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, Contact.class);
spec = tabHost.newTabSpec("contact").setIndicator("Contact",
res.getDrawable(R.drawable.ic_tab_contact))
.setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(2);
}
private class HelloWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
}
In AntoniusActivity, the private class HelloWebViewClient is underlined with yellow (never used), specifically the bit "HelloWebViewClient".
It's also throwing FC's at startup, and errors in LogCat, but I'll post those later on, as it's 10.30 PM here, and school goes on
Thanks in advance,
bassie1995
No suggestions yet?
How you doin'? Greetings from my GT-I9000!
I just started developing apps and I've come across the error: Void is an invalid type for the variable button1Click. I got the error on the following line of code
public void button1Click; {
It's in my java class, I'm trying to open an activity from another. This is my entire code looks like this
package trial.play;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.app.Activity;
import android.content.Intent;
public class Food extends Activity implements View.OnClickListener {
Button button1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.singer);
button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
return super.onCreateOptionsMenu(menu);
}
public void button1Click; {
startActivity(new Intent("android.intent.action.TESTMENUACTIVITY"));}
public void onClick(View view) {
// TODO Auto-generated method stub
switch (view.getId()) {
case R.id.button1:
button1Click: break;
}
}
public void Enter(View view) {
Intent openTestMenuActivity = (new Intent(
"trial.play.TESTMENUACTIVITY"));
startActivity(openTestMenuActivity);
}
}
I'm still new to development so be specific and show me what you mean if you can.
Thanks
I have trouble creating a service for a mediaplayer. I would like to have startforeground instead of this as well. But I have no proof of my service running. So I dont know if my code actually works. Can someone help me?
If someone is able to help me completely setting up my service, I may pay €5-10. I received €50 from the company to set up a developer account. So I have €25 left.
I am creating a streaming app for a radio station to listen to the internet stream.
Code:
package jonashendrickx.radioplayer.rgrfm;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;
public class RadioService extends Service {
private final IBinder mBinder = new RadioBinder();
@Override
public void onCreate() {
Toast.makeText(this, "Let's Go", Toast.LENGTH_SHORT).show();
}
@Override
public IBinder onBind(Intent arg0) {
Log.e("LocalService", "Launched");
return mBinder;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i("LocalService", "Received start id " + startId + ": " + intent);
return START_STICKY;
}
public class RadioBinder extends Binder {
RadioService getService() {
return RadioService.this;
}
}
}
Code:
package jonashendrickx.radioplayer.rgrfm;
import android.os.Bundle;
import android.os.IBinder;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.util.Log;
import android.view.Menu;
public class MainActivity extends Activity {
private ServiceConnection mConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName className, IBinder service) {
mRadioService = ((RadioService.RadioBinder)service).getService();
}
@Override
public void onServiceDisconnected(ComponentName className) {
mRadioService = null;
}
};
private RadioService mRadioService;
private boolean mIsBound;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
doBindService();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
protected void onDestroy() {
super.onDestroy();
doUnbindService();
}
void doBindService() {
bindService(new Intent(this, RadioService.class), mConnection, Context.BIND_AUTO_CREATE);
mIsBound = true;
Log.e("", "service started");
}
void doUnbindService() {
if (mIsBound) {
// Detach our existing connection.
unbindService(mConnection);
mIsBound = false;
}
}
}
Anyone see what im doing wrong here? im new to java so i dont have a clue..
successfully compiles without a problem but crashes on start, the blue code i have added
Code:
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
[COLOR=DeepSkyBlue]import android.widget.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;[/COLOR]
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
[COLOR=DeepSkyBlue] Button startpatching = (Button)findViewById(R.id.start);
startpatching.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
Process proc = Runtime.getRuntime().exec("/data/local/startpatch.sh /");
BufferedReader read = new BufferedReader(new InputStreamReader(
proc.getInputStream()));
try {
proc.waitFor();
} catch (InterruptedException e) {
System.out.println(e.getMessage());
}
while (read.ready()) {
System.out.println(read.readLine());
}
} catch (IOException e) {
System.out.println(e.getMessage());
}}
});
};[/COLOR]
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
}
Probably would be wise to include the stack trace...
ricky310711 said:
Anyone see what im doing wrong here? im new to java so i dont have a clue..
successfully compiles without a problem but crashes on start, the blue code i have added
Code:
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
[COLOR=DeepSkyBlue]import android.widget.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;[/COLOR]
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
[COLOR=DeepSkyBlue] Button startpatching = (Button)findViewById(R.id.start);
startpatching.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
Process proc = Runtime.getRuntime().exec("/data/local/startpatch.sh /");
BufferedReader read = new BufferedReader(new InputStreamReader(
proc.getInputStream()));
try {
proc.waitFor();
} catch (InterruptedException e) {
System.out.println(e.getMessage());
}
while (read.ready()) {
System.out.println(read.readLine());
}
} catch (IOException e) {
System.out.println(e.getMessage());
}}
});
};[/COLOR]
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
return rootView;
}
}
}
Click to expand...
Click to collapse
Post a log/stacktrace as jcase suggested and also the content of activity_main.xml
jcase said:
Probably would be wise to include the stack trace...
Click to expand...
Click to collapse
Jonny said:
Post a log/stacktrace as jcase suggested and also the content of activity_main.xml
Click to expand...
Click to collapse
thanks guy, got it working but
I'm developing a simple chat app and it just stops after transmitting the message. The Server shows the message that means that it is sent successfully but my app crashes after that. This is the Client code :
Code:
package com.example.androidpc;
import java.io.IOException;
import java.io.PrintStream;
import java.net.Socket;
import java.util.Scanner;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class Chat extends Activity {
Socket socket;
EditText msg_txt;
TextView chatfield_tv;
Button send_btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat);
msg_txt = (EditText) findViewById(R.id.msg_txt);
chatfield_tv = (TextView) findViewById(R.id.chatfield_tv);
send_btn = (Button) findViewById(R.id.send_btn);
socket = SocketWrapper.getSocket();
send_btn.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
new chatIO().execute();
}
});
}
private class chatIO extends AsyncTask<String,String,String>{
PrintStream ps;
Scanner scan;
@Override
protected String doInBackground(String... arg0) {
// TODO Auto-generated method stub
try {
ps = new PrintStream(socket.getOutputStream());
ps.println(msg_txt.getText().toString());
publishProgress("you");
scan = new Scanner(socket.getInputStream());
publishProgress("i");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onProgressUpdate(String... values) {
// TODO Auto-generated method stub
if(values[0].equals("you"))
{
chatfield_tv.append("You : "+msg_txt.getText().toString());
msg_txt.setText("");
}
else
{
chatfield_tv.append("Server : "+scan.nextLine());
}
super.onProgressUpdate(values);
}
@Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
ps.flush();
scan.close();
super.onPostExecute(result);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.chat, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
I don't have a logcat since i don't test on an emulator or adb