diff options
Diffstat (limited to 'Android/01-TheActivityClass/ActivityLab/src/course/labs/activitylab/ActivityOne.java')
| -rw-r--r-- | Android/01-TheActivityClass/ActivityLab/src/course/labs/activitylab/ActivityOne.java | 79 | 
1 files changed, 39 insertions, 40 deletions
| diff --git a/Android/01-TheActivityClass/ActivityLab/src/course/labs/activitylab/ActivityOne.java b/Android/01-TheActivityClass/ActivityLab/src/course/labs/activitylab/ActivityOne.java index 83e1df7..b5c7f01 100644 --- a/Android/01-TheActivityClass/ActivityLab/src/course/labs/activitylab/ActivityOne.java +++ b/Android/01-TheActivityClass/ActivityLab/src/course/labs/activitylab/ActivityOne.java @@ -21,48 +21,48 @@ public class ActivityOne extends Activity {      // 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 +    private int mCreate; +    private int mStart; +    private int mResume; +    private int mRestart; -    // TODO: Create variables for each of the TextViews, called -    // mTvCreate, etc. +    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); -        // TODO: Assign the appropriate TextViews to the TextView variables -        // Hint: Access the TextView by calling Activity's findViewById() -        // textView1 = (TextView) findViewById(R.id.textView1); +        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) { -                // 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 +                Intent intent = new Intent(ActivityOne.this, ActivityTwo.class); +                startActivity(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 +            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");          } -        // TODO: Emit LogCat message -        // TODO: -        // Update the appropriate count variable -        // Update the user interface via the displayCounts() method +        Log.i(TAG, "onCreate()"); +        mCreate += 1; +        displayCounts();      }      // Lifecycle callback overrides @@ -70,53 +70,52 @@ public class ActivityOne extends Activity {      @Override      public void onStart() {          super.onStart(); -        // TODO: Emit LogCat message -        // TODO: -        // Update the appropriate count variable -        // Update the user interface +        Log.i(TAG, "onStart()"); +        mStart += 1; +        displayCounts();      }      @Override      public void onResume() {          super.onResume(); -        // TODO: Emit LogCat message -        // TODO: -        // Update the appropriate count variable -        // Update the user interface +        Log.i(TAG, "onResume()"); +        mResume += 1; +        displayCounts();      }      @Override      public void onPause() {          super.onPause(); -        // TODO: Emit LogCat message +        Log.i(TAG, "onPause()");      }      @Override      public void onStop() {          super.onStop(); -        // TODO: Emit LogCat message +        Log.i(TAG, "onStop()");      }      @Override      public void onRestart() {          super.onRestart(); -        // TODO: Emit LogCat message -        // TODO: -        // Update the appropriate count variable -        // Update the user interface +        Log.i(TAG, "onRestart()"); +        mRestart += 1; +        displayCounts();      }      @Override      public void onDestroy() {          super.onDestroy(); -        // TODO: Emit LogCat message +        Log.i(TAG, "onDestroy()");      }      @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 +        Log.i(TAG, "onSaveInstanceState()"); +        savedInstanceState.putSerializable("mCreate", mCreate); +        savedInstanceState.putSerializable("mStart", mStart); +        savedInstanceState.putSerializable("mResume", mResume); +        savedInstanceState.putSerializable("mRestart", mRestart);      }      // Updates the displayed counters | 
