Solutions to some common errors in Android development from eclipse to Android Studio: eclipseandroid

Solutions to some common errors in Android development from eclipse to Android Studio: eclipseandroid

1. added a Dialog topic to an Activity. The following error occurs, but no error occurs in eclipse.

 <activity            android:name=".DialogActivity"            android:label="@string/title_activity_dialog"            android:theme="@android:style/Theme.Dialog"            >        </activity>

Error message:

Java. lang. IllegalStateException: You need to use a Theme. AppCompat theme (or descendant) with this activity.

2. Add requestWindowFeature (Window. FEATURE_NO_TITLE) to the Activity. (No title is displayed.) No error is reported in eclipse, but an error is reported in android studio.

1     @Override2     protected void onCreate(Bundle savedInstanceState) {3         super.onCreate(savedInstanceState);4          requestWindowFeature(Window.FEATURE_NO_TITLE);5         setContentView(R.layout.activity_dialog);6     }

 

 

Solution:

The activity created by Android Studio is MainActivity extends ActionBarActivity. Change ActionBarActivity to Activity and export the package.