Question

我正在关注ActionBarCompat的教程，该教程也启用了搜索文本区域。我从v7支持lib扩展了ActionBarActivity。当我尝试覆盖这两个方法时，它无法在超类中找到它们。我去了源代码并查看了超类的方法，我也找不到它们。这两种方法是onQueryTextSubmit和onQueryTextChange This was the tutorial.

知道我做错了吗？

当我将鼠标悬停在方法上时，这是错误：

The method onQueryTextChange(String) of type MainActivity must override or implement a supertype method

public class MainActivity extends ActionBarActivity{
private SearchView mSearchView;

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

    try {
        ViewConfiguration config = ViewConfiguration.get(this);
        Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
        if(menuKeyField != null) {
            menuKeyField.setAccessible(true);
            menuKeyField.setBoolean(config, false);
        }
    } catch (Exception ex) {
        // Ignore
    }

}

@Override
public boolean onQueryTextSubmit(String s) {
    Toast.makeText(this, s, Toast.LENGTH_LONG).show();
    return true;
}

@Override
public boolean onQueryTextChange(String s) {
    return false;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);

    MenuItem searchItem=menu.findItem(R.id.action_search);
    mSearchView = (SearchView) MenuItemCompat.getActionView(searchItem);
    return true;
}


@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch(item.getItemId()){

    case R.id.action_search:
        mSearchView.setIconified(false);
        return true;

    }

    return false;
}

Answer 1

听起来你没有实现这些方法所需的类。

public class MainActivity extends ActionBarActivity implements SearchView.OnQueryTextListener

确保您已实施SearchView.OnQueryTextListener。

ActionBarCompat无法从超类中找到方法

1 个答案: