來自Android應用的錯誤setOnClickListener

Question

大家好，我在練習中使用的代碼遇到了問題。 事實是，它對提供教程的人有效，但對我不起作用。 我的問題是如何解決？

 package bt.sismo;


import android.os.Bundle;
import android.view.View;
import android.widget.Toast;//
import android.widget.ListView;//
import android.widget.ListAdapter;//
import android.widget.ArrayAdapter;//
import android.widget.AdapterView;//
import android.app.Activity;//

public class MainActivity extends Activity {


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

        String[] foods = {"Bacon", "Ham", "Tuna", "Candy", "Meatball", "Potato"};
        ListAdapter bryansAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, foods);
        ListView bryansListView = (ListView) findViewById(R.id.bryansListView);
        bryansListView.setAdapter(bryansAdapter);

        bryansListView.setOnClickListener(
                new AdapterView.OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                        String food = String.valueOf(parent.getItemAtPosition(position));
                        Toast.makeText(MainActivity.this, food, Toast.LENGTH_LONG).show();
                    }
                }

        );
    }
}

稍后它在logcat中給我這個錯誤

    Error:(26, 23) error: no suitable method found for setOnClickListener(<anonymous OnItemClickListener>)
    method View.setOnClickListener(OnClickListener) is not applicable
    (argument mismatch; <anonymous OnItemClickListener> cannot be converted to OnClickListener)
    method AdapterView.setOnClickListener(OnClickListener) is not applicable
    (argument mismatch; <anonymous OnItemClickListener> cannot be converted to OnClickListener)

Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

Answer 1

您正在調用setOnClickListener並傳遞一個OnItemClickListener 。

更改此：

bryansListView.setOnClickListener(...)

對此：

bryansListView.setOnItemClickListener(...)

Answer 2

        bryansListView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {

            String food = String.valueOf(parent.getItemAtPosition(position));
                    Toast.makeText(MainActivity.this, food, Toast.LENGTH_LONG).show();

        }
    });