cannot resolve context after importing android.content.Context; also

Question

This is my mainactivity.java class

package com.example.apurva.therisingsatyam;

import android.os.Bundle;
import android.content.Context;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.content.Intent;

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    public void onClick(View v) {

        switch (v.getId()) {
            case R.id.button:
                Intent intent = new Intent(context, LogIn.class);
                startActivity(intent);
                break;
            case R.id.button2:
                Intent intent1 = new Intent(context, SignUp.class);
                startActivity(intent1);
                break;
        }
    }
}

I am trying to switch activity when the button is clicked.But as can be seen in above code there is a red line under context word at both the places in onClick method, although I have imported android.content.context . Please someone help me out to solve this issue.

Solution 1

context is not declared by you, so I suggest you to use following lines of code:

Intent intent = new Intent(MainActivity.this, LogIn.class);//MainActivity.this contains your current context
startActivity(intent);

Still any doubt then feel free to ask.

Solution 2

context is not declared and initialized

Change this

Intent intent = new Intent(context, LogIn.class);

to

Intent intent = new Intent(MainActivity.this, LogIn.class);

Similarly for the other intent

Your MainActivity extends Activity

java.lang.Object
   ↳    android.content.Context
       ↳    android.content.ContextWrapper
           ↳    android.view.ContextThemeWrapper
               ↳    android.app.Activity

So to get context you can have MainActivity.this.

Also i don't see where you initiailze your views and your Activity does not implement OnClickListener interface

Comments

[richapathak]

I am totally new to android. I am trying to make two buttons pointing to two different login and signup activity. I got this code online.Is there any problem in this code and plz tell me what do you mean by....."Also i don't see where you initialze your views and your Activity does not implement OnClickListener interface "

[Raghunandan]

@apurvapathak do refer developer.android.com/reference/android/widget/Button.html