i have simple app using dialog for divided,subtraction,and etc with looping condition by operator
my error
02-08 17:29:23.271: W/KeyCharacterMap(744): No keyboard for id 0
02-08 17:29:23.271: W/KeyCharacterMap(744): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
02-08 17:29:24.011: D/dalvikvm(744): GC_EXTERNAL_ALLOC freed 72K, 52% free 2611K/5379K, external 914K/1038K, paused 59ms
02-08 17:29:26.101: W/KeyCharacterMap(744): No keyboard for id 0
02-08 17:29:26.101: W/KeyCharacterMap(744): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
02-08 17:29:30.311: D/AndroidRuntime(744): Shutting down VM
02-08 17:29:30.311: W/dalvikvm(744): threadid=1: thread exiting with uncaught exception (group=0x40015560)
02-08 17:29:30.321: E/AndroidRuntime(744): FATAL EXCEPTION: main
02-08 17:29:30.321: E/AndroidRuntime(744): java.lang.NullPointerException
02-08 17:29:30.321: E/AndroidRuntime(744): at com.example.dialog_looping.MainActivity$1$1$1.onClick(MainActivity.java:72)
02-08 17:29:30.321: E/AndroidRuntime(744): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:159)
02-08 17:29:30.321: E/AndroidRuntime(744): at android.os.Handler.dispatchMessage(Handler.java:99)
02-08 17:29:30.321: E/AndroidRuntime(744): at android.os.Looper.loop(Looper.java:123)
02-08 17:29:30.321: E/AndroidRuntime(744): at android.app.ActivityThread.main(ActivityThread.java:3683)
02-08 17:29:30.321: E/AndroidRuntime(744): at java.lang.reflect.Method.invokeNative(Native Method)
02-08 17:29:30.321: E/AndroidRuntime(744): at java.lang.reflect.Method.invoke(Method.java:507)
02-08 17:29:30.321: E/AndroidRuntime(744): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-08 17:29:30.321: E/AndroidRuntime(744): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-08 17:29:30.321: E/AndroidRuntime(744): at dalvik.system.NativeStart.main(Native Method)
02-08 17:34:30.490: I/Process(744): Sending signal. PID: 744 SIG: 9
this is my full code use dialog looping for subtraction,divided and etc….
public class MainActivity extends Activity {
int result=0,i;
int [] arr;
int indexArray = 0;
String Oprtr;
RadioGroup operator_mode;
RadioButton rb;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final LayoutInflater inflater = this.getLayoutInflater();
final View v=inflater.inflate(R.layout.dialoginput, null);
operator_mode=(RadioGroup)findViewById(R.id.operator);
//operator_mode.setOnClickListener(l)(null);
new AlertDialog.Builder(MainActivity.this)
.setIcon(R.drawable.ic_launcher)
.setTitle("Total Operator")
.setView(v)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, int whichButton) {
EditText op = (EditText)v.findViewById(R.id.operator);
arr=new int [Integer.valueOf(op.getText().toString())+1];
for (i = 0;i<arr.length;i++){
LayoutInflater inflater = MainActivity.this.getLayoutInflater();
final View v2=inflater.inflate(R.layout.input, null) ;
new AlertDialog.Builder(MainActivity.this)
.setIcon(R.drawable.ic_launcher)
.setTitle("number:")
.setView(v2)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dlg, int sumthin) {
EditText number = (EditText)v2.findViewById(R.id.number);
arr[indexArray]= Integer.valueOf(number.getText().toString());
//Log.v ("aa",Integer.toString(arr[indexArray]));
LayoutInflater inflater = MainActivity.this.getLayoutInflater();
final View v3=inflater.inflate(R.layout.operator, null) ;
new AlertDialog.Builder(MainActivity.this)
.setIcon(R.drawable.ic_launcher)
.setTitle("select Operator:")
.setView(v3)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dlg, int sumthin) {
sumthin = operator_mode.getCheckedRadioButtonId();
rb = (RadioButton) findViewById(sumthin);
switch(sumthin){
case R.id.plus:
Oprtr = "+";
Log.v ("aa",Oprtr);
/*
if (indexArray==0){
result = arr[indexArray];
if (result<0){
new AlertDialog.Builder(MainActivity.this)
.setTitle("Error")
.setMessage("result can't negative value")
.setNeutralButton("Close", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dlg, int sumthin) {
finish();
}
})
.show();
} else if (result>9999999){
new AlertDialog.Builder(MainActivity.this)
.setTitle("Error")
.setMessage("result can't > 9999999")
.setNeutralButton("Close", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dlg, int sumthin) {
finish();
}
})
.show();
}else {
new AlertDialog.Builder(MainActivity.this)
.setTitle("result")
.setMessage(Integer.toString(result))
.setNeutralButton("Close", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dlg, int sumthin) {
}
})
.show();
}
} else {
result = result + arr[indexArray];
if (result<0){
new AlertDialog.Builder(MainActivity.this)
.setTitle("Error")
.setMessage("result can't negative value")
.setNeutralButton("Close", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dlg, int sumthin) {
finish();
}
})
.show();
} else if (result>9999999){
new AlertDialog.Builder(MainActivity.this)
.setTitle("Error")
.setMessage("result can't > 9999999")
.setNeutralButton("Close", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dlg, int sumthin) {
finish();
}
})
.show();
}else {
new AlertDialog.Builder(MainActivity.this)
.setTitle("result")
.setMessage(Integer.toString(result))
.setNeutralButton("Close", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dlg, int sumthin) {
}
})
.show();
}
}
indexArray++;
*/
break;
case R.id.minus:
//str="Meeting Mode";
break;
case R.id.substract:
//str="Silent Mode";
break;
case R.id.divide:
//str="Offline Mode";
break;
}
}
})
.show();
}
})
.show();
}
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
finish();
}
})
.show();
}
}
where the error with my code?
please help me.thanks
Your
RadioGroupis null, I believe. You need to set your view withsetContentView(R.layout.your_view)Then if you need to inflate a view use:
operator_mode=(RadioGroup)v.findViewById(R.id.operator);instead of
operator_mode=(RadioGroup)findViewById(R.id.operator);Edit
You can use your inflater but you would have to do something like:
But you are still calling
setContentView()