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What are the problems in using Intent to pass objects from one activity to another


What are the problems in using Intent to pass objects from one activity to another

By : bluebabygirl26
Date : November 28 2020, 11:01 PM
around this issue Intents should only pass small packets of data. If you need to pass something big, save it to storage or a database, pass an uri through the Intent and then read the data in the receiving Activity.
Passing big data in the intent will cause drastic problems, up to the point of killing your app process (which is very annoying to the user).
code :


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Android Problems Pass variable/intent to an activity

Android Problems Pass variable/intent to an activity


By : user3148501
Date : March 29 2020, 07:55 AM
it should still fix some issue "check this out just put this code in your onclick of first activity Note:->directly capture the edittext donot save the edit text in string and then pass it ,if you will do show then string will not pass. see the below example"
code :
 public void onClick(View v) {

// TODO Auto-generated method stub
Intent i = new Intent(this,Web.class);
i.putExtra("epuzzle",urlenter.getText().toString());

final int result = 1;
startActivityForResult(i, result);
}
 Intent intent = getIntent();
 w.loadUrl(intent.getExtras().getString("epuzzle"));
 w.getSettings().setJavaScriptEnabled(true);
Android Intent :-Use Intent to pass class objects from Activities

Android Intent :-Use Intent to pass class objects from Activities


By : Juny
Date : March 29 2020, 07:55 AM
seems to work fine You can use Serializable or Parcelable
If you use Serializable you only have to implement it by writing implements Serializable
How to pass ArrayList of Objects from one to another activity using Intent in android?

How to pass ArrayList of Objects from one to another activity using Intent in android?


By : Lukovskij Artem
Date : March 29 2020, 07:55 AM
Any of those help I have the following in code in my onClick() method as , It works well,
code :
public class Question implements Serializable {
    private int[] operands;
    private int[] choices;
    private int userAnswerIndex;

   public Question(int[] operands, int[] choices) {
       this.operands = operands;
       this.choices = choices;
       this.userAnswerIndex = -1;
   }

   public int[] getChoices() {
       return choices;
   }

   public void setChoices(int[] choices) {
       this.choices = choices;
   }

   public int[] getOperands() {
       return operands;
   }

   public void setOperands(int[] operands) {
       this.operands = operands;
   }

   public int getUserAnswerIndex() {
       return userAnswerIndex;
   }

   public void setUserAnswerIndex(int userAnswerIndex) {
       this.userAnswerIndex = userAnswerIndex;
   }

   public int getAnswer() {
       int answer = 0;
       for (int operand : operands) {
           answer += operand;
       }
       return answer;
   }

   public boolean isCorrect() {
       return getAnswer() == choices[this.userAnswerIndex];
   }

   public boolean hasAnswered() {
       return userAnswerIndex != -1;
   }

   @Override
   public String toString() {
       StringBuilder builder = new StringBuilder();

       // Question
       builder.append("Question: ");
       for(int operand : operands) {
           builder.append(String.format("%d ", operand));
       }
       builder.append(System.getProperty("line.separator"));

       // Choices
       int answer = getAnswer();
       for (int choice : choices) {
           if (choice == answer) {
               builder.append(String.format("%d (A) ", choice));
           } else {
               builder.append(String.format("%d ", choice));
           }
       }
       return builder.toString();
     }
  }
  List<Question> mQuestionList = new ArrayList<Question>;
  mQuestionsList = QuestionBank.getQuestions();
  mQuestionList.add(new Question(ops1, choices1));

  Intent intent = new Intent(SourceActivity.this, TargetActivity.class);
  intent.putExtra("QuestionListExtra", ArrayList<Question>mQuestionList);
  List<Question> questions = new ArrayList<Question>();
  questions = (ArrayList<Question>)getIntent().getSerializableExtra("QuestionListExtra");
Pass object that contains objects to Activity via Intent

Pass object that contains objects to Activity via Intent


By : Mody El Sayed
Date : March 29 2020, 07:55 AM
hop of those help? You're trying to pass around data that shouldn't normally be passed around. A list is an ideal candidate for an SQLite Database. Try that or another way to persist data in android: http://developer.android.com/guide/topics/data/data-storage.html
If you insist on using Parcelable: How can I make my custom objects Parcelable?
Using intent to pass spinner objects to a new activity via a button

Using intent to pass spinner objects to a new activity via a button


By : md dipu
Date : March 29 2020, 07:55 AM
this one helps. problem in your code is that you are creating two different intent object. The former filled up with the string:
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