Cannot start new activity using Intent in Android

Question

I have two activity MainActivity.java and ListActivity.java .

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    button = (Button)findViewById(R.id.nextButton);
    button.setOnClickListener(new AdapterView.OnClickListener(){
        public void onClick(View view){
            startAc(view);
        }
    });
}
public void startAc(View view){
    Intent intent = new Intent(this, ListActivity.class);
    startActivity(intent);
}

As soon as I click the button, the Emulator gives an error Application has stopped working.

Is the use of Intent inappropriate?

Answer 1

Try this code your wrong import your are import adapterview please import correct View.OnClickListener

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button)findViewById(R.id.nextButton);
button.setOnClickListener(new OnClickListener(){
    public void onClick(View view){

    Intent intent = new Intent(getapplicationcontext(), ListActivity.class);
    startActivity(intent);
                }
    });
   }

Add Your Manifest this line after closing first activity

   <activity android:name=".ListActivity.class"/>

Answer 2

try changing this to MainActivity.this . Also make sure every activity is defined in manifest