Develop Reference

How to make text green if chinese words are equals?

I am learning Android Studio and I have a question: I wanna say something in chinese and there compare the word/phrase I said with the one that was displayed at the screen. And if these two words are equals - make text green. else - red. But it always red after I press the mic button.
Will appriciate any help
public class SpeakingActivity extends AppCompatActivity {
private static final int REQUEST_CODE_SPEECH_INPUT = 1000;
TextView mTextView;
TextView input;
ImageButton mImageButton;
Button button;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.speakingfromhome);
button = findViewById(R.id.nextSpeaking);
mTextView = findViewById(R.id.output);
mImageButton = findViewById(R.id.image);
input = findViewById(R.id.input);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
changeQuestions();
mTextView.setTextColor(Color.BLACK);
}
});
mImageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
speak();
checkIfCorrect();
}
});
}
private void checkIfCorrect() {
if (input.toString().equals(mTextView.toString()))
mTextView.setTextColor(Color.GREEN);
else
mTextView.setTextColor(Color.RED);
}
private void changeQuestions() {
input.setText("基辅");
}
private void speak() {
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.CHINA.toString());
try {
startActivityForResult(intent, REQUEST_CODE_SPEECH_INPUT);
} catch (Exception ex) {
Toast.makeText(this, "" + ex.getMessage(), Toast.LENGTH_SHORT).show();
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case REQUEST_CODE_SPEECH_INPUT: {
if (resultCode == RESULT_OK && null != data) {
ArrayList<String> result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
mTextView.setText(result.get(0));
}
break;
}
}
}
}

The function checkIfCorrect() is the problem
Change it to:
input.toString() -> input.getText()
mTextView.toString() -> mTextView.getText()
Like:
input.getText().equals(mTextView.getText())
with getText() get the text of the TextView, doint input.toString() convert the object TextView to String
your checkIfCorrect function must look like:
private void checkIfCorrect() {
if (input.getText().equals(mTextView.getText()))
mTextView.setTextColor(Color.GREEN);
else
mTextView.setTextColor(Color.RED);
}
A better way:
private void checkIfCorrect() {
mTextView.setTextColor((input.getText().equals(mTextView.getText())) ? Color.GREEN : Color.RED )
}

QR Code Scanner error in Android using ZXING library

I have the following code. Whenever I press a button, the result is displayed in Display class but sometimes it throws me out from app and sometimes it works properly. I Dont know how?
Can anyone explain why this is happening?
public class MainActivity extends AppCompatActivity {
Context con = this;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onScanClick(View view) {
initiateScan();
}
private void initiateScan() {
IntentIntegrator integrator = new IntentIntegrator((Activity) con);
integrator.setBeepEnabled(true);
integrator.initiateScan();
}
// Get the results:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if(result != null) {
if(result.getContents() == null) {
Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
} else {
ShowResult.Dispay((Activity) con,result.getContents());
Vibrator.vibrate(250L,con);
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
}

Android code to add and view data through application

I am developing a Task manager( a simple one) to learn android and this is my short description.
I am making two activities one to view task and other to add ( and I am using an Application class through which i add the task)..
when i add the task on the addtask activity my viewtask activity still remains blank. Could you help me out.
This is my viewTask activity.
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_task);
setupviews();
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
System.out.println(requestCode);
if (requestCode == 1) {
showtask(); // your "refresh" code
}
}
public void OnResume()
{
super.onResume();
System.out.println("Its working...");
showtask();
}
/*public void onPause(){
super.onPause();
}*/
public void showtask()
{
ArrayList<Task> task=gettma().gettask();
StringBuffer sb=new StringBuffer();
for(Task t:task){
sb.append(String.format("* %s\n", t.toString()));
System.out.println("Its working...again");
}
taskText.setText(sb.toString());
}
private TaskManagerApplication gettma() {
TaskManagerApplication tma1=(TaskManagerApplication)getApplication();
return tma1;
}
private void setupviews() {
AddButton=(Button)findViewById(R.id.AddButton);
taskText=(TextView)findViewById(R.id.TextList);
AddButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent=new Intent(ViewTask.this,AddTask.class);
startActivity(intent);
}
});
}
}
And this is my Addtask activity.
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.addtask);
setupviews();
}
protected void addtask() {
String name=EditText.getText().toString();
Task t= new Task(name);
//System.out.println("its working here");
gettma().addTask(t);
finish();
}
private TaskManagerApplication gettma() {
TaskManagerApplication tma=(TaskManagerApplication)getApplication();
return tma;
}
private void setupviews() {
EditText=(EditText)findViewById(R.id.EditText);
AddButton=(Button)findViewById(R.id.AddButton1);
CancelButton=(Button)findViewById(R.id.CancelButton);
AddButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
addtask();
}
});
CancelButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
finish();
}
});
}
}
Please Help

EditText=(EditText)findViewById(R.id.EditText);
This is the line in your setupviews(). You cannot do this because EditText is a class and you need a variable of that type to which you can assign a value. It must be EditText followed by some variable name.
if (requestCode == 1) {
showtask(); // your "refresh" code
}
This is in your onActivityResult(). You aren't checking the resultCode to check if the called Activity failed to do the operation that would produce a result.
Also, in numerous places you arent following the Java naming convention. Please, use upper and lower cases properly when naming variables and classes.

restore functionality in InApp android

I have implemented Inapp Billing in my app. For that i have used buttons. when i click button it goes to the purchase activity and it purchases the product. once it purchases the product the button will be invisible. and the other button will be visible which will allow the user to open the product. It is all happening perfectly.But when i reopen the app again the button for purchase is visible . i do not want the button to be visible once it is purchased. how to make the button invisible once it is used for successful purchase.
StartUpActivity.java
public class StartUpActivity extends PurchaseActivity implements OnIabSetupFinishedListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d("App started");
}
#Override
public void onIabSetupFinished(IabResult result) {
if (result.isSuccess()) {
Log.d("In-app Billing set up" + result);
dealWithIabSetupSuccess();
} else {
Log.d("Problem setting up In-app Billing: " + result);
dealWithIabSetupFailure();
}
}
#Override
protected void dealWithIabSetupSuccess() {
navigate().toMainActivity();
finish();
}
#Override
protected void dealWithIabSetupFailure() {
popBurntToast("Sorry In App Billing isn't available on your device");
}
}
MainActivity.java
public class MainActivity extends BlundellActivity implements MainMenu {
public Button topicsbutton;
public Button mediabutton;
public Button purchasetopicsbutton;
public Button purchasemediabutton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
topicsbutton = (Button) findViewById(R.id.button1a);
mediabutton = (Button) findViewById(R.id.button2a);
purchasetopicsbutton = (Button) findViewById(R.id.button1);
purchasemediabutton = (Button) findViewById(R.id.button2);
}
#Override
public void onTopicsPurchaseItemClick(View v) {
navigate().toPurchaseTopicsActivityForResult();
}
#Override
public void onMediaPurchaseItemClick(View v) {
navigate().toPurchaseMediaActivityForResult();
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (Navigator.REQUEST_TOPICS_PURCHASE == requestCode) {
if (RESULT_OK == resultCode) {
dealWithSuccessfulTopicsPurchase();
} else {
dealWithFailedTopicsPurchase();
}
} else if (Navigator.REQUEST_MEDIA_PURCHASE == requestCode) {
if (RESULT_OK == resultCode) {
dealWithSuccessfulMediaPurchase();
} else {
dealWithFailedMediaPurchase();
}
}
}
public void dealWithSuccessfulTopicsPurchase() {
Log.d("Topics purchased");
popToast("Topics purchased");
topicsbutton.setVisibility(View.VISIBLE);
purchasetopicsbutton.setVisibility(View.INVISIBLE);
}
private void dealWithSuccessfulMediaPurchase() {
Log.d("Media purchased");
popToast("Media purchased");
mediabutton.setVisibility(View.VISIBLE);
purchasemediabutton.setVisibility(View.INVISIBLE);
}
private void dealWithFailedTopicsPurchase() {
Log.d("Topics purchase failed");
popToast("Failed to purchase Topics");
}
private void dealWithFailedMediaPurchase() {
Log.d("Media purchase failed");
popToast("Failed to purchase Media");
}
public void TopicsOpen(View v) {
navigate().toTopicsopen();
}
public void MediaOpen(View v) {
navigate().toMediaopen();
}
}
PurchaseActivity.java
public abstract class PurchaseActivity extends BlundellActivity implements OnIabSetupFinishedListener, OnIabPurchaseFinishedListener {
private IabHelper billingHelper;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_purchase);
setResult(RESULT_CANCELED);
billingHelper = new IabHelper(this, AppProperties.BASE_64_KEY);
billingHelper.startSetup(this);
}
#Override
public void onIabSetupFinished(IabResult result) {
if (result.isSuccess()) {
Log.d("In-app Billing set up" + result);
dealWithIabSetupSuccess();
} else {
Log.d("Problem setting up In-app Billing: " + result);
dealWithIabSetupFailure();
}
}
protected abstract void dealWithIabSetupSuccess();
protected abstract void dealWithIabSetupFailure();
protected void purchaseItem(String sku) {
billingHelper.launchPurchaseFlow(this, sku, 123, this);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
billingHelper.handleActivityResult(requestCode, resultCode, data);
}
#Override
public void onIabPurchaseFinished(IabResult result, Purchase info) {
if (result.isFailure()) {
dealWithPurchaseFailed(result);
} else if (Items.SKU1.equals(info.getSku())) {
dealWithTopicsPurchaseSuccess(result, info);
}
else if (Items.SKU2.equals(info.getSku())) {
dealWithMediaPurchaseSuccess(result, info);
}
finish();
}
protected void dealWithPurchaseFailed(IabResult result) {
Log.d("Error purchasing: " + result);
}
protected void dealWithTopicsPurchaseSuccess(IabResult result, Purchase info) {
Log.d("Item purchased: " + result);
}
protected void dealWithMediaPurchaseSuccess(IabResult result, Purchase info) {
Log.d("Item purchased: " + result);
billingHelper.consumeAsync(info, null);
}
#Override
protected void onDestroy() {
disposeBillingHelper();
super.onDestroy();
}
private void disposeBillingHelper() {
if (billingHelper != null) {
billingHelper.dispose();
}
billingHelper = null;
}
}

If you are using the API version 3 you can call getPurchases() method at the onCreate().
This method returns the current un-consumed products owned by the user.
That means if your product is un-consumable, i.e, user will only buy it once then you will have your necessary info right here.
Can't explain how to do it better than in official documentation. Take a look at the Querying for Purchased Items topic to have a code example.
Basically you will receive a list of ownedSkus (owned product ID's) and all you have to do is a loop over this list and make your buttons invisible/ visible.
Let me know if this what you was looking for :)

Cant getting result from child activity

I have a Parent activity which is sending data to child activity but the child is not returning the result. I posted portion of code from both activity altogether below- Theres a few code that I didnt post for unnecessity.
public class TdeeActivity extends Activity {
public static final int CALLED_ACTIVITY = 1;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tdee);
Button ok=(Button)findViewById(R.id.btnOk);
ok.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent bmr= new Intent(TdeeActivity.this,BMRActivity.class);
startActivityForResult(bmr,CALLED_ACTIVITY);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode) {
case CALLED_ACTIVITY:
if (resultCode == RESULT_OK) {
Toast.makeText(this, "THE RESULT-"+data.getExtras().getString("result"),
Toast.LENGTH_SHORT).show();
}
}
}
} // end class
public class BMRActivity extends Activity{
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bmr);
Button btnOk=(Button)findViewById(R.id.btnOk);
btnOk.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
showResult();
}
});
public void showResult() {
Intent data= new Intent();
data.putExtra("result",result);
setResult(RESULT_OK, data);
finish();
}
}
}// end class

I tested you code in a dummy project and it was working fine at my end.. following is the code for both activity:
public class ParentActivity extends Activity {
private static final int CALLED_ACTIVITY = 0;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent bmr = new Intent(ParentActivity.this, ChildActivity.class);
startActivityForResult(bmr, CALLED_ACTIVITY);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode) {
case CALLED_ACTIVITY:
if (resultCode == RESULT_OK) {
Toast.makeText(this, "THE RESULT-"+data.getExtras().getString("result"),
Toast.LENGTH_SHORT).show();
}
}
}
}
public class ChildActivity extends Activity {
final Activity activity = this;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Returning result from child activity
Intent data = new Intent();
data.putExtra("result", "from child"
+ this.getCallingActivity().getClassName());
setResult(RESULT_OK, data);
finish();
}
}
So please post more code so that issue can be found..