Question

这个简单的代码！

package itawfik.com.wifi;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

/**
 * Created by Emin01 on 03/09/2016.
 */

public class ListWifi extends AppCompatActivity {
    ListView list;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.listwifi);
        list = (ListView) findViewById(R.id.listId);
        MyTawfik.setUpListView(list);
        String[] values = new String[]{"Android List View",
                "Adapter implementation",
                "Simple List View In Android",
                "Create List View Android",
                "Android Example",
                "List View Source Code",
                "List View Array Adapter",
                "Android Example List View"
        };
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, android.R.id.text1, values);
        list.setAdapter(adapter);
        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {

                // ListView Clicked item index
                int itemPosition = position;

                // ListView Clicked item value
                String itemValue = (String) list.getItemAtPosition(position);

                // Show Alert
                Toast.makeText(getApplicationContext(),
                        "Position :" + itemPosition + "  ListItem : " + itemValue, Toast.LENGTH_LONG)
                        .show();

            }

        });
    }
}

这是我使用它的地方！

 public void listConacted() {
        Intent intent = new Intent(this, ListWifi.class);
        startActivity(intent);

    }

致命的例外：主要 java.lang.IllegalStateException：找不到方法 listConacted（View）在父或祖先上下文中为android：onClick 在视图类上定义的属性 android.support.v7.widget.AppCompatTextView，带有id＆＃39; textView＆＃39; 在android.support.v7.app.AppCompatViewInflater $ DeclaredOnClickListener.resolveMethod（AppCompatViewInflater.java:327）在android.support.v7.app.AppCompatViewInflater $ DeclaredOnClickListener.onClick（AppCompatViewInflater.java:284）在android.view.View.performClick（View.java:4204）在android.view.View $ PerformClick.run（View.java:17355）在android.os.Handler.handleCallback（Handler.java:725）在android.os.Handler.dispatchMessage（Handler.java:92）在android.os.Looper.loop（Looper.java:152）在android.app.ActivityThread.main（ActivityThread.java:5132） at java.lang.reflect.Method.invokeNative（Native Method）在java.lang.reflect.Method.invoke（Method.java:511）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:793）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:560）在dalvik.system.NativeStart.main（本地方法）

Answer 1

找不到方法listConacted（）。 listConacted（查看v）

Answer 2

public void listConacted（） - ＆gt; public void listConacted（View view）; - Shaishav

这是什么意思＆＃34; java.lang.IllegalStateException＆＃34;？

2 个答案: