dependencies {
implementation 'com.android.support:support-v4:27.1.0'
}
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
public class MainActivity extends FragmentActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
Fragment fragment = new MyFragment();
fragmentTransaction.add(R.id.container, fragment);
fragmentTransaction.commit();
}
}
import android.support.v4.app.LoaderManager;
import android.support.v4.content.Loader;
import android.support.v4.content.CursorLoader;
import android.support.v4.app.FragmentActivity;
public class MainActivity extends FragmentActivity implements LoaderManager.LoaderCallbacks<Cursor> {
private static final int LOADER_ID = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getSupportLoaderManager().initLoader(LOADER_ID, null, this);
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
return new CursorLoader(this, Uri.parse("content://your_content_provider/your_table_name"), null, null, null, null);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
}
}
import android.support.v4.view.GestureDetectorCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.view.PagerAdapter;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.FragmentActivity;
public class MainActivity extends FragmentActivity {
private ViewPager viewPager;
private PagerAdapter pagerAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewPager = findViewById(R.id.view_pager);
pagerAdapter = new MyPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(pagerAdapter);
}
private class MyPagerAdapter extends FragmentPagerAdapter {
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return new MyFragment();
}
@Override
public int getCount() {
return 3;
}
}
}
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v4.widget.NestedScrollView;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.TextViewCompat;
public class MainActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener {
private SwipeRefreshLayout swipeRefreshLayout;
private TextView textView;
private NestedScrollView nestedScrollView;
private DrawerLayout drawerLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
swipeRefreshLayout = findViewById(R.id.swipe_refresh_layout);
swipeRefreshLayout.setOnRefreshListener(this);
textView = findViewById(R.id.text_view);
nestedScrollView = findViewById(R.id.nested_scroll_view);
drawerLayout = findViewById(R.id.drawer_layout);
}
@Override
public void onRefresh() {
}
}
