I am trying to accept a phrase and pass it to other class called Animation.And I am using a self defined class called Error to store if error happens and what word causes the error.But when the button representing the class is clicked it displays "unfortunately the application has stopped".Check out partial code of the class below. Thank you for your help in advance.
public class Convert extends Activity implements OnClickListener {
EditText inputConvert;
TextView correct;
String correction;
String[] message = getResources().getStringArray(R.array.basic_words);
final Context context = this;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.convert);
View convert = findViewById(R.id.conv_button);
convert.setOnClickListener(this);
}
public void onClick(View v)
{
inputConvert=(EditText) findViewById(R.id.inputConvert);
String phrase = inputConvert.getText().toString();
if(v.getId()==R.id.conv_button)
{
Error obj1= new Error(false ,"initial");
obj1=check(phrase);
if(obj1.flag)
startAnim(phrase);
else
{
correction = build(obj1.word);
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.error);
Button dialogButton = (Button)dialog.findViewById(R.id.dialogButtonOK);
correct= (TextView) findViewById(R.id.error_content);
correct.setText(correction);
dialog.setTitle(R.string.help);
dialogButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();
}
}
}
public String build(String word)
{
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("the word \"");
stringBuilder.append(word);
stringBuilder.append(" \" is not found please try to use a synomym");
String finalString = stringBuilder.toString();
return finalString;
}
public Error check(String word)
{
Error obj2 = new Error(false ,"initial");
obj2.word=word;
String[] words = word.split(" ");
for(int i=0; i< words.length; i++)
{
for(int j=0; i< message.length; j++)
{
if(words[i]==message[j])
obj2.flag=true;
break;
}
if(!obj2.flag)
obj2.word=words[i];
break;
}
return obj2;
}
public void startAnim(String phrase)
{
Intent j = new Intent(this, Animation.class);
j.putExtra("phrase",phrase);
startActivity(j);
}
Here is the code of the Animation activity.
public class Animation extends Activity
{
AnimationDrawable animation;
TextView errorMessage= (TextView)findViewById(R.id.testex);
@SuppressWarnings("deprecation")
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.animation);
Intent j= getIntent();
CharSequence message = j.getStringExtra("phrase");
String phrase=message.toString();
String[] words = phrase.split(" ");
animation = new AnimationDrawable();
int imid=0;
for(int i=0; i< words.length; i++)
{
imid=getResources().getIdentifier(words[i], "drawable", getPackageName());
animation.addFrame(getResources().getDrawable(imid), 700);
}
animation.setOneShot(false);
ImageView img = (ImageView)findViewById(R.id.spinning_wheel_image);
img.setBackgroundDrawable(animation);
animation = (AnimationDrawable) img.getBackground();
// Start the animation (looped playback by default).
animation.start();
}
}
Logcat.
12-12 08:32:04.962: E/AndroidRuntime(2273): FATAL EXCEPTION: main 12-12 08:32:04.962: E/AndroidRuntime(2273): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{org.example.ihear/org.example.ihear.Convert}: java.lang.NullPointerException 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2137) 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261) 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.app.ActivityThread.access$600(ActivityThread.java:141) 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256) 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.os.Handler.dispatchMessage(Handler.java:99) 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.os.Looper.loop(Looper.java:137) 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.app.ActivityThread.main(ActivityThread.java:5103) 12-12 08:32:04.962: E/AndroidRuntime(2273): at java.lang.reflect.Method.invokeNative(Native Method) 12-12 08:32:04.962: E/AndroidRuntime(2273): at java.lang.reflect.Method.invoke(Method.java:525) 12-12 08:32:04.962: E/AndroidRuntime(2273): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 12-12 08:32:04.962: E/AndroidRuntime(2273): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 12-12 08:32:04.962: E/AndroidRuntime(2273): at dalvik.system.NativeStart.main(Native Method) 12-12 08:32:04.962: E/AndroidRuntime(2273): Caused by: java.lang.NullPointerException 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.content.ContextWrapper.getResources(ContextWrapper.java:89) 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.view.ContextThemeWrapper.getResources(ContextThemeWrapper.java:78) 12-12 08:32:04.962: E/AndroidRuntime(2273): at org.example.ihear.Convert.(Convert.java:19) 12-12 08:32:04.962: E/AndroidRuntime(2273): at java.lang.Class.newInstanceImpl(Native Method) 12-12 08:32:04.962: E/AndroidRuntime(2273): at java.lang.Class.newInstance(Class.java:1130) 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.app.Instrumentation.newActivity(Instrumentation.java:1061) 12-12 08:32:04.962: E/AndroidRuntime(2273): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2128) 12-12 08:32:04.962: E/AndroidRuntime(2273): ... 11 more
