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package course.labs.activitylab;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class ActivityOne extends Activity {
private static final String RESTART_KEY = "restart";
private static final String RESUME_KEY = "resume";
private static final String START_KEY = "start";
private static final String CREATE_KEY = "create";
// String for LogCat documentation
private final static String TAG = "Lab-ActivityOne";
// Lifecycle counters
// TODO:
// Create counter variables for onCreate(), onRestart(), onStart() and
// onResume(), called mCreate, etc.
// You will need to increment these variables' values when their
// corresponding lifecycle methods get called
// TODO: Create variables for each of the TextViews, called
// mTvCreate, etc.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_one);
// TODO: Assign the appropriate TextViews to the TextView variables
// Hint: Access the TextView by calling Activity's findViewById()
// textView1 = (TextView) findViewById(R.id.textView1);
Button launchActivityTwoButton = (Button) findViewById(R.id.bLaunchActivityTwo);
launchActivityTwoButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO:
// Launch Activity Two
// Hint: use Context's startActivity() method
// Create an intent stating which Activity you would like to start
// Launch the Activity using the intent
}
});
// Check for previously saved state
if (savedInstanceState != null) {
// TODO:
// Restore value of counters from saved state
// Only need 4 lines of code, one for every count variable
}
// TODO: Emit LogCat message
// TODO:
// Update the appropriate count variable
// Update the user interface via the displayCounts() method
}
// Lifecycle callback overrides
@Override
public void onStart() {
super.onStart();
// TODO: Emit LogCat message
// TODO:
// Update the appropriate count variable
// Update the user interface
}
@Override
public void onResume() {
super.onResume();
// TODO: Emit LogCat message
// TODO:
// Update the appropriate count variable
// Update the user interface
}
@Override
public void onPause() {
super.onPause();
// TODO: Emit LogCat message
}
@Override
public void onStop() {
super.onStop();
// TODO: Emit LogCat message
}
@Override
public void onRestart() {
super.onRestart();
// TODO: Emit LogCat message
// TODO:
// Update the appropriate count variable
// Update the user interface
}
@Override
public void onDestroy() {
super.onDestroy();
// TODO: Emit LogCat message
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
// TODO:
// Save state information with a collection of key-value pairs
// 4 lines of code, one for every count variable
}
// Updates the displayed counters
public void displayCounts() {
mTvCreate.setText("onCreate() calls: " + mCreate);
mTvStart.setText("onStart() calls: " + mStart);
mTvResume.setText("onResume() calls: " + mResume);
mTvRestart.setText("onRestart() calls: " + mRestart);
}
}
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