Display User Input From One Activity To Another In A Textview

I tried to display User Input from my main activity to my second activity, but when I typed in and click the send button on the main activity the whole app just crashes. Please hel

Solution 1:

You are passing int, but receive it in String, so your app crashed.

MainActivity

int message = R.string.UserInput;
    Intent sendMessage = new Intent(MainActivity.this, DisplayMessageActivity.class);
    sendMessage.putExtra("UserInput", message);

DisplayMessageActivity

BundleExtra= getIntent().getExtras();
StringtextView= Extra.getString("UserInput");

You should also add

intent.putExtra("UserInput", message); 

into launchActivity method.

Solution 1

Change String textView = Extra.getString("UserInput"); to int textView= Extra.getIntExtra("UserInput", 0);

Solution 2

To send the message to your second Activity, you need to use intent inside your MainActivity button click. Modify your code as below.

package com.example.dell_inspiron.sendmessage;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

importstatic android.R.id.message;

publicclassMainActivityextendsAppCompatActivity {

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Stringmessage= getResources().getString(R.string.UserInput);

    finalButtonsend= (Button) findViewById(R.id.send);
    send.setOnClickListener(newView.OnClickListener()

    {
        publicvoidonClick(View v) {
         IntentsendMessage=newIntent(MainActivity.this,DisplayMessageActivity.class);
         sendMessage.putExtra("UserInput", message);
         startActivity(sendMessage);
        }
    });
}
}

Solution 3

This line look wrong to me

finalString message = getResources().getString(R.string.UserInput);

If you want to get the editText string, this is the way to go

EditTextinput= (EditText)findViewById(R.id.UserInput);  // declare your editTextfinalStringmessage= input.getText().toString();  // get your input type

Solution 2:

You mentioned that you are getting the user input from the MainActivity but i don't see anything like that in your code but you can do the below to pass some value from one activity to another...

Change your second activity like this

BundleExtra= getIntent().getExtras();
StringtextView= Extra.getString("UserInput");

to

IntentExtra= getIntent();
StringtextView= Extra.getStringExtra("UserInput");

and change your MainActivity like this

int message = R.string.UserInput;

to

String message= getResources().getString(R.string.UserInput);

and

finalButtonsend= (Button) findViewById(R.id.send);
send.setOnClickListener(newView.OnClickListener(){
    publicvoidonClick(View v) {
      launchActivity();

    }
});

to

Buttonsend= (Button) findViewById(R.id.send);
send.setOnClickListener(newView.OnClickListener(){
    publicvoidonClick(View v) {
      startActivity(sendMessage);

    }
});

Solution 3:

There is issue with your second Activity.You are passing int value in Intents but trying to get String value.

Change it as below:

import android.content.Intent;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.TextView;

  publicclassDisplayMessageActivityextendsAppCompatActivity {

  @OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_display_message);

 BundleExtra= getIntent().getExtras();
 inttextView= Extra.getInt("UserInput");

TextViewUserInput= (TextView) findViewById(R.id.UserInput2);
UserInput.setText(textView);

finalButtonbutton= (Button) findViewById(R.id.button2);
button.setOnClickListener(newView.OnClickListener()

{
    publicvoidonClick(View v) {
        launchActivity();

    }
});
}

privatevoidlaunchActivity() {

Intentintent=newIntent(this, MainActivity.class);
startActivity(intent);
}

}