Hi Ytai.
thank you for your replay. Unfortunately i cannot make sense of the Log Cat.
Would you mind taking a look at the file yourself?
I really am grateful for your help.
(File attached)
Regards
Francesco
On Sunday, March 23, 2014 10:41:55 PM UTC, Ytai wrote:
>
> Look at the logcat output. When an android app crashes it writes a log
> message with the reason.
> On Mar 23, 2014 2:47 PM, "Francesco Cembrola"
> <[email protected]<javascript:>>
> wrote:
>
>>
>> Hi everybody,
>> I am new to the forum.
>> I have written a small app that uses two buttons to turn ON and OFF two
>> LEDs.
>> It compiles with no errors.
>> The console says it was installed on my tablet correctly...but then it
>> crashes when run.
>>
>> Can someone take a look at the code below and help me, please?
>> By the way I am new to Java and android!
>>
>> Regards
>>
>> Francesco cembrola
>>
>> =========================================================
>>
>> package com.example.timobot;
>>
>> import ioio.lib.api.DigitalOutput;
>> import ioio.lib.api.exception.ConnectionLostException;
>> import ioio.lib.util.BaseIOIOLooper;
>> import ioio.lib.util.IOIOLooper;
>> import ioio.lib.util.android.IOIOActivity;
>> import android.os.Bundle;
>> import android.view.MotionEvent;
>> import android.view.View;
>> import android.view.View.OnTouchListener;
>> import android.widget.Button;
>>
>>
>> public abstract class MainActivity extends IOIOActivity implements
>> OnTouchListener {
>>
>> private final int Left_Pin = 6;
>> private final int Right_Pin = 3;
>> boolean LeftTurnState=false;
>> boolean RightTurnState=false;
>> private Button LEFT_Button,RIGHT_Button;
>>
>> @Override
>> public void onCreate(Bundle savedInstanceState) {
>> super.onCreate(savedInstanceState);
>> setContentView(R.layout.activity_main);
>>
>> LEFT_Button = (Button) findViewById(R.id.LEFT);
>> LEFT_Button.setOnTouchListener(this);
>>
>> RIGHT_Button = (Button) findViewById(R.id.RIGHT);
>> RIGHT_Button.setOnTouchListener(this);
>> }
>>
>> class Looper extends BaseIOIOLooper {
>> public DigitalOutput LeftTurn;
>> public DigitalOutput RightTurn;
>>
>>
>> @Override
>> protected void setup() throws ConnectionLostException {
>> LeftTurn = ioio_.openDigitalOutput(Left_Pin, false);
>> RightTurn = ioio_.openDigitalOutput(Right_Pin, false);
>> }
>>
>> @Override
>> public void loop() throws ConnectionLostException {
>>
>> LeftTurn.write(LeftTurnState);
>> RightTurn.write(RightTurnState);
>>
>>
>> try {
>> Thread.sleep(100);
>> }catch (InterruptedException e) {
>> }
>>
>> }
>> }
>> protected IOIOLooper createIOIOLooper(){
>> return new Looper();
>>
>> }
>> @Override
>> public boolean onTouch(View arg0, MotionEvent arg1) {
>>
>> switch (arg0.getId())
>> {
>>
>> case R.id.LEFT:
>> {
>>
>> if(arg1.getAction()==MotionEvent.ACTION_DOWN)
>> {
>> LeftTurnState=true;
>>
>> }
>> if (arg1.getAction()==MotionEvent.ACTION_UP)
>> {
>> LeftTurnState=false;
>>
>> }
>>
>> }
>> break;
>>
>> case R.id.RIGHT:
>> {
>> if(arg1.getAction()==MotionEvent.ACTION_DOWN)
>> {
>> RightTurnState=true;
>>
>> }
>> if (arg1.getAction()==MotionEvent.ACTION_UP)
>> {
>> RightTurnState=false;
>>
>> }
>> break;
>>
>> }
>>
>> }
>> return false;
>>
>> }
>>
>> }
>>
>>
>>
>>
>>
>> --
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>
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01-06 23:41:35.215: D/dalvikvm(4446): Late-enabling CheckJNI
01-06 23:41:35.280: D/dalvikvm(4446): newInstance failed: p0 i0 [0 a1
01-06 23:41:35.285: D/AndroidRuntime(4446): Shutting down VM
01-06 23:41:35.285: W/dalvikvm(4446): threadid=1: thread exiting with uncaught
exception (group=0x4146f2a0)
01-06 23:41:35.285: E/AndroidRuntime(4446): FATAL EXCEPTION: main
01-06 23:41:35.285: E/AndroidRuntime(4446): java.lang.RuntimeException: Unable
to instantiate activity
ComponentInfo{com.example.timobot/com.example.timobot.MainActivity}:
java.lang.InstantiationException: can't instantiate class
com.example.timobot.MainActivity
01-06 23:41:35.285: E/AndroidRuntime(4446): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2034)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
android.app.ActivityThread.access$700(ActivityThread.java:140)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
android.os.Handler.dispatchMessage(Handler.java:99)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
android.os.Looper.loop(Looper.java:137)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
android.app.ActivityThread.main(ActivityThread.java:4921)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
java.lang.reflect.Method.invokeNative(Native Method)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
java.lang.reflect.Method.invoke(Method.java:511)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
dalvik.system.NativeStart.main(Native Method)
01-06 23:41:35.285: E/AndroidRuntime(4446): Caused by:
java.lang.InstantiationException: can't instantiate class
com.example.timobot.MainActivity
01-06 23:41:35.285: E/AndroidRuntime(4446): at
java.lang.Class.newInstanceImpl(Native Method)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
java.lang.Class.newInstance(Class.java:1319)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
android.app.Instrumentation.newActivity(Instrumentation.java:1068)
01-06 23:41:35.285: E/AndroidRuntime(4446): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2025)
01-06 23:41:35.285: E/AndroidRuntime(4446): ... 11 more
01-06 23:45:37.485: I/Process(4446): Sending signal. PID: 4446 SIG: 9
