CODEWITHSUNDEEP
javaandroidback-button
sandygautam
sandygautam

Reputation: 19

On pressing the back key activity is not going back

i am getting a strange problem.

On pressing the back key activity is not going back. in logcat it is showing

04-15 19:24:09.063: V/Activity(23041): Tracking Key Up, activity is resumed: false

here is my code for the activity

package com.sandy.letsfixthat;

import android.app.Activity;
import android.app.LocalActivityManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;


public class Slider extends Activity {
    TabSpec beginer,inter,dev;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);

        setContentView(R.layout.slider);
        TabHost th = (TabHost)findViewById(R.id.tabhost);

        LocalActivityManager mLocalActivityManager = new LocalActivityManager(this, false);

        // state will be bundle your activity state which you
        // get in onCreate
        mLocalActivityManager.dispatchCreate(savedInstanceState);
        th.setup(mLocalActivityManager);
        //tab for beginner
        beginer = th.newTabSpec("Begin");
        beginer.setIndicator("Beginner");
        Intent begin = new Intent(this, Beginner.class);
        beginer.setContent(begin);
        th.addTab(beginer);

        //tab for intermediate
        inter = th.newTabSpec("Inter");
        inter.setIndicator("Intermediate");
        Intent Intermediate = new Intent(this, Intermediate.class);
        inter.setContent(Intermediate);
        th.addTab(inter);

        //tab for developers
        dev = th.newTabSpec("Devel");
        dev.setIndicator("Other");
        Intent develop = new Intent(this, Developer.class);
        dev.setContent(develop);
        th.addTab(dev);
    }

    public boolean onCreateOptionsMenu(android.view.Menu menu) {
        // TODO Auto-generated method stub
        super.onCreateOptionsMenu(menu);
        MenuInflater blowUp = getMenuInflater();
        blowUp.inflate(R.menu.menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // TODO Auto-generated method stub
        switch (item.getItemId()){
        case R.id.aboutUs:
            Intent i = new Intent(this,About.class);
            startActivity(i);
            break;

        case R.id.exit:
            finish();
            break;

  /*    case R.id.setting:
            Intent setting = new Intent (this,Settings.class);
            startActivity(setting);
            break;                          */
        }
        return false;
    }

    @Override
    public void onPause() {
        // your code.
        super.onPause();
        finish();
    }
}

code of MainActivity

package com.sandy.letsfixthat;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity implements OnClickListener {
    Button go;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        go = (Button)findViewById(R.id.bgo);
        go.setOnClickListener(this);

    }

    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        switch (arg0.getId()){
        case R.id.bgo:
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setMessage("NOTE:- this is an initial release. MORE TUTORIAL COMING IN NEXT UPDATE")
                   .setCancelable(false)
                   .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    // do things
                    Intent i = new Intent(MainActivity.this,Slider.class);
                    startActivity(i);
                }
            });
            AlertDialog alert = builder.create();
            alert.show();
            break;
        }
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        finish();
    }
}

When I open this slider activity and press back button, nothing happens. What it should do on back button press is EXIT THE APP.

Upvotes: 2

Views: 354

Answers (3)

Edward Falk
Edward Falk

Reputation: 10063

Normally, you shouldn't need to do anything for the back button to terminate your activity. What you need to do is not override onBackButtonPressed() or onKeyDown(). Or if you do override onKeyDown(), then don't do anything for keycode KEYCODE_BACK other than return false.

Note that this only terminates the activity, not the application. If you want to exit the entire application, then it's a little trickier. Let us know if that's what you wanted to do, and I'll expand on this answer.

Upvotes: 0

yuu ki
yuu ki

Reputation: 21

just add this Line:

mLocalActivityManager.dispatchResume();

worked for me!

Upvotes: 2

Gbayer
Gbayer

Reputation: 31

You can override the back button function with:

public void onBackPressed(){
  finish(); 
}

so it will finish your app. Just keep in mind that this is not the best solution and you should not use finish () in the on pause method.

Upvotes: 0

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