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- `<GridView xmlns:android="http://schemas.android.com/apk/res/android"
- android:id="@+id/gridview"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:columnWidth="90dp"
- android:numColumns="auto_fit"
- android:verticalSpacing="10dp"
- android:horizontalSpacing="10dp"
- android:stretchMode="columnWidth"
- android:gravity="center" />`
- public class MyAdapter extends BaseAdapter {
- private Context mContext;
- public MyAdapter(Context c) {
- mContext = c;
- }
- public int getCount() {
- return mThumbIds.length;
- }
- public Object getItem(int position) {
- return null;
- }
- public long getItemId(int position) {
- return 0;
- }
- // create a new ImageView for each item referenced by the Adapter
- public View getView(int position, View convertView, ViewGroup parent) {
- ImageView imageView;
- if (convertView == null) {
- // if it's not recycled, initialize some attributes
- imageView = new ImageView(mContext);
- imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
- imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
- imageView.setPadding(8, 8, 8, 8);
- } else {
- imageView = (ImageView) convertView;
- }
- imageView.setImageResource(mThumbIds[position]);
- return imageView;
- }
- // references to our images
- private Integer[] mThumbIds = {
- R.drawable.sample_2, R.drawable.sample_3,
- R.drawable.sample_4, R.drawable.sample_5,
- R.drawable.sample_6, R.drawable.sample_7,
- R.drawable.sample_0, R.drawable.sample_1,
- R.drawable.sample_2, R.drawable.sample_3,
- R.drawable.sample_4, R.drawable.sample_5,
- R.drawable.sample_6, R.drawable.sample_7,
- R.drawable.sample_0, R.drawable.sample_1,
- R.drawable.sample_2, R.drawable.sample_3,
- R.drawable.sample_4, R.drawable.sample_5,
- R.drawable.sample_6, R.drawable.sample_7
- };
- }
- public class MainActivity extends AppCompatActivity {
- private SectionsPagerAdapter mSectionsPagerAdapter;
- private ViewPager mViewPager;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
- setSupportActionBar(toolbar);
- mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
- mViewPager = (ViewPager) findViewById(R.id.container);
- mViewPager.setAdapter(mSectionsPagerAdapter);
- FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
- fab.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View view) {
- Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
- .setAction("Action", null).show();
- }
- });
- //------------ the code that i added//////////////////////////////////
- GridView gridview = (GridView) findViewById(R.id.gridview);
- gridview.setAdapter(new MyAdapter(this));
- gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
- public void onItemClick(AdapterView<?> parent, View v,
- int position, long id) {
- Toast.makeText(getApplicationContext(), "" + position,
- Toast.LENGTH_SHORT).show();
- }
- });
- //end of the code that i added///////////////////////////////////////
- }
- @Override
- public boolean onCreateOptionsMenu(Menu menu) {
- // Inflate the menu; this adds items to the action bar if it is present.
- getMenuInflater().inflate(R.menu.menu_main, menu);
- return true;
- }
- @Override
- public boolean onOptionsItemSelected(MenuItem item) {
- // Handle action bar item clicks here. The action bar will
- // automatically handle clicks on the Home/Up button, so long
- // as you specify a parent activity in AndroidManifest.xml.
- int id = item.getItemId();
- //noinspection SimplifiableIfStatement
- if (id == R.id.action_settings) {
- return true;
- }
- return super.onOptionsItemSelected(item);
- }
- /**
- * A placeholder fragment containing a simple view.
- */
- public static class PlaceholderFragment extends Fragment {
- /**
- * The fragment argument representing the section number for this
- * fragment.
- */
- private static final String ARG_SECTION_NUMBER = "section_number";
- public PlaceholderFragment() {
- }
- /**
- * Returns a new instance of this fragment for the given section
- * number.
- */
- public static PlaceholderFragment newInstance(int sectionNumber) {
- PlaceholderFragment fragment = new PlaceholderFragment();
- Bundle args = new Bundle();
- args.putInt(ARG_SECTION_NUMBER, sectionNumber);
- fragment.setArguments(args);
- return fragment;
- }
- @Override
- public View onCreateView(LayoutInflater inflater, ViewGroup container,
- Bundle savedInstanceState) {
- View rootView = inflater.inflate(R.layout.fragment_main, container, false);
- TextView textView = (TextView) rootView.findViewById(R.id.section_label);
- textView.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
- return rootView;
- }
- }
- /**
- * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
- * one of the sections/tabs/pages.
- */
- public class SectionsPagerAdapter extends FragmentPagerAdapter {
- public SectionsPagerAdapter(FragmentManager fm) {
- super(fm);
- }
- @Override
- public Fragment getItem(int position) {
- // getItem is called to instantiate the fragment for the given page.
- // Return a PlaceholderFragment (defined as a static inner class below).
- return PlaceholderFragment.newInstance(position + 1);
- }
- @Override
- public int getCount() {
- // Show 3 total pages.
- return 3;
- }
- @Override
- public CharSequence getPageTitle(int position) {
- switch (position) {
- case 0:
- return "SECTION 1";
- case 1:
- return "SECTION 2";
- case 2:
- return "SECTION 3";
- }
- return null;
- }
- }
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