Question

我收到此错误 - 无法解析方法＆＃39; onListItemClick（android.widget.ListView，android.view.View，int，long）＆＃39; 我已经尝试使用onClickListener方法，但这不起作用。请建议。

这是代码 -

public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener {

private Toolbar mToolbar;
private FragmentDrawer drawerFragment;
ListView listview;


String[] pdflist;
File[] imagelist;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mToolbar = (Toolbar) findViewById(R.id.toolbar);

    setSupportActionBar(mToolbar);
    getSupportActionBar().setDisplayShowHomeEnabled(true);

    drawerFragment = (FragmentDrawer)
            getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
    drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
    drawerFragment.setDrawerListener(this);


    File images = Environment.getExternalStorageDirectory();
    imagelist = images.listFiles(new FilenameFilter() {
        public boolean accept(File dir, String name) {
            return ((name.endsWith(".pdf")));
        }
    });
    pdflist = new String[imagelist.length];
    for (int i = 0; i < imagelist.length; i++) {
        pdflist[i] = imagelist[i].getName();
    }
    listview.setAdapter(new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, pdflist));

        }


protected void onListItemClick(ListView l, View v, int position, long id) {
   super.onListItemClick(l, v, position, id);
    String path = imagelist[(int) id].getAbsolutePath();
    openPdfIntent(path);
}



private void openPdfIntent(String path) {
    try {
        final Intent intent = new Intent(MainActivity.this, Second.class);
        intent.putExtra(PdfViewerActivity.EXTRA_PDFFILENAME, path);
        startActivity(intent);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

Answer 1

请改用：

 yourListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

        }
    });

Answer 2

将此行替换为

public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener {

到

public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener, OnItemClickListener {

并在onCreate()方法中添加以下行：

listview = (ListView) findViewById(R.id.listView1);
listview.setOnItemClickListener(this);

无法解析方法＆＃39; OnListItemClick＆＃39;

2 个答案: