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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
private int mCreate;
private int mStart;
private int mResume;
private int mRestart;
private TextView mTvCreate;
private TextView mTvStart;
private TextView mTvResume;
private TextView mTvRestart;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_one);
mTvCreate = (TextView) findViewById(R.id.create);
mTvStart = (TextView) findViewById(R.id.start);
mTvResume = (TextView) findViewById(R.id.resume);
mTvRestart = (TextView) findViewById(R.id.restart);
Button launchActivityTwoButton = (Button) findViewById(R.id.bLaunchActivityTwo);
launchActivityTwoButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(ActivityOne.this, ActivityTwo.class);
startActivity(intent);
}
});
// Check for previously saved state
if (savedInstanceState != null) {
Log.i(TAG, "restore savedInstanceState");
mCreate = (Integer) savedInstanceState.getSerializable("mCreate");
mStart = (Integer) savedInstanceState.getSerializable("mStart");
mResume = (Integer) savedInstanceState.getSerializable("mResume");
mRestart = (Integer) savedInstanceState.getSerializable("mRestart");
}
Log.i(TAG, "onCreate()");
mCreate += 1;
displayCounts();
}
// Lifecycle callback overrides
@Override
public void onStart() {
super.onStart();
Log.i(TAG, "onStart()");
mStart += 1;
displayCounts();
}
@Override
public void onResume() {
super.onResume();
Log.i(TAG, "onResume()");
mResume += 1;
displayCounts();
}
@Override
public void onPause() {
super.onPause();
Log.i(TAG, "onPause()");
}
@Override
public void onStop() {
super.onStop();
Log.i(TAG, "onStop()");
}
@Override
public void onRestart() {
super.onRestart();
Log.i(TAG, "onRestart()");
mRestart += 1;
displayCounts();
}
@Override
public void onDestroy() {
super.onDestroy();
Log.i(TAG, "onDestroy()");
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
Log.i(TAG, "onSaveInstanceState()");
savedInstanceState.putSerializable("mCreate", mCreate);
savedInstanceState.putSerializable("mStart", mStart);
savedInstanceState.putSerializable("mResume", mResume);
savedInstanceState.putSerializable("mRestart", mRestart);
}
// 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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