0
請糾正我，如果我錯了，但我已經做了所有的下面，我仍然得到一個錯誤，如果我運行test2.java，我得到的onCreate計數是在jUnit測試關閉錯誤。onCreate count已關閉，但代碼看起來不錯
請condider以下：
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
private int mCreate = 0;
private int mRestart = 0;
private int mResume = 0;
private int mStart = 0;
// TODO: Create variables for each of the TextViews, called
// mTvCreate, etc.
private TextView mTvCreate;
private TextView mTvRestart;
private TextView mTvResume;
private TextView mTvStart;
Bundle instancestate;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_one);
instancestate = savedInstanceState;
// 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);
mTvRestart = (TextView) findViewById(R.id.restart);
mTvResume = (TextView) findViewById(R.id.resume);
mTvStart = (TextView) findViewById(R.id.start);
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
Intent activityTwo = new Intent(ActivityOne.this,ActivityTwo.class);
startActivity(activityTwo);
// Launch the Activity using the intent
}
});
// Check for previously saved state
if (savedInstanceState != null) {
// TODO:
// Restore value of counters from saved state
mCreate = savedInstanceState.getInt(CREATE_KEY);
mRestart = savedInstanceState.getInt(RESTART_KEY);
mStart = savedInstanceState.getInt(START_KEY);
mResume = savedInstanceState.getInt(RESUME_KEY);
// Only need 4 lines of code, one for every count variable
}
// TODO: Emit LogCat message
Log.i(TAG, "Entered onCreate() method" +mCreate);
// TODO:
// Update the appropriate count variable
++mCreate;
// Update the user interface via the displayCounts() method
displayCounts();
}
// Lifecycle callback overrides
@Override
public void onStart() {
super.onStart();
// TODO: Emit LogCat message
Log.i(TAG, "Entered onStart() method" +mStart);
// TODO:
// Update the appropriate count variable
++mStart;
// Update the user interface
displayCounts();
}
@Override
public void onResume() {
super.onResume();
// TODO: Emit LogCat message
Log.i(RESUME_KEY, "Entered onResume() method" +mResume);
// TODO:
// Update the appropriate count variable
++mResume;
// Update the user interface
displayCounts();
}
@Override
public void onPause() {
super.onPause();
//onSaveInstanceState(instancestate);
// TODO: Emit LogCat message
Log.i(TAG, "Entered onPause() method" +mStart);
}
@Override
public void onStop() {
super.onStop();
// TODO: Emit LogCat message
Log.i(TAG, "Entered onStop() method" +mStart);
}
@Override
public void onRestart() {
super.onRestart();
// TODO: Emit LogCat message
Log.i(TAG, "Entered onRestart() method" +mResume);
// TODO:
// Update the appropriate count variable
++mRestart;
// Update the user interface
displayCounts();
}
@Override
public void onDestroy() {
super.onDestroy();
// TODO: Emit LogCat message
Log.i(TAG, "Entered onDestroy() method");
}
@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
savedInstanceState.putInt(CREATE_KEY, mCreate);
savedInstanceState.putInt(RESTART_KEY, mRestart);
savedInstanceState.putInt(START_KEY, mStart);
savedInstanceState.putInt(RESUME_KEY, mResume);
super.onSaveInstanceState(savedInstanceState);
}
// 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);
}
}
這是堆棧跟蹤：
junit.framework.AssertionFailedError: onCreate() count was off.
at course.labs.activitylab.test.Test2.testRun(Test2.java:55)
...