需要 onClick 处理程序才能查看

Posted 2023-04-19

【中文标题】需要 onClick 处理程序才能查看

【英文标题】：need onClick handler to view

【发布时间】：2016-02-16 11:00:14

【问题描述】：

大家好.. 抱歉这个菜鸟问题。 我很难找到放置 onClick 的位置。 非常感谢您的帮助.. ^_^

这是日志猫

11-15 05:14:18.041: E/androidRuntime(433): FATAL EXCEPTION: main
11-15 05:14:18.041: E/AndroidRuntime(433): java.lang.IllegalStateException: Could not find a method getTerjemahan(View) in the activity class indo.tora.kamus.KamusActivity for onClick handler on view class android.widget.Button with id 'btnTerjemah'
11-15 05:14:18.041: E/AndroidRuntime(433):  at android.view.View$1.onClick(View.java:2059)
11-15 05:14:18.041: E/AndroidRuntime(433):  at android.view.View.performClick(View.java:2408)
11-15 05:14:18.041: E/AndroidRuntime(433):  at android.view.View$PerformClick.run(View.java:8816)
11-15 05:14:18.041: E/AndroidRuntime(433):  at android.os.Handler.handleCallback(Handler.java:587)
11-15 05:14:18.041: E/AndroidRuntime(433):  at android.os.Handler.dispatchMessage(Handler.java:92)
11-15 05:14:18.041: E/AndroidRuntime(433):  at android.os.Looper.loop(Looper.java:123)
11-15 05:14:18.041: E/AndroidRuntime(433):  at android.app.ActivityThread.main(ActivityThread.java:4627)
11-15 05:14:18.041: E/AndroidRuntime(433):  at java.lang.reflect.Method.invokeNative(Native Method)
11-15 05:14:18.041: E/AndroidRuntime(433):  at java.lang.reflect.Method.invoke(Method.java:521)
11-15 05:14:18.041: E/AndroidRuntime(433):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
11-15 05:14:18.041: E/AndroidRuntime(433):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
11-15 05:14:18.041: E/AndroidRuntime(433):  at dalvik.system.NativeStart.main(Native Method)
11-15 05:14:18.041: E/AndroidRuntime(433): Caused by: java.lang.NoSuchMethodException: getTerjemahan
11-15 05:14:18.041: E/AndroidRuntime(433):  at java.lang.ClassCache.findMethodByName(ClassCache.java:308)
11-15 05:14:18.041: E/AndroidRuntime(433):  at java.lang.Class.getMethod(Class.java:985)
11-15 05:14:18.041: E/AndroidRuntime(433):  at android.view.View$1.onClick(View.java:2052)

这是需要在点击广告的类..ShowKamus.java

package indo.tora.kamus;

import android.app.Activity;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;



public class ShowKamus extends Activity 


    private SQLiteDatabase db = null;
    private Cursor kamusCursor = null;
    private EditText txtInggris;
    private EditText txtIndonesia;
    private DataKamus datakamus = null;
    Button translate;
    public static final String INGGRIS = "inggris";
    public static final String INDONESIA = "indonesia";



     /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) 

        super.onCreate(savedInstanceState);

        datakamus = new DataKamus(this);

        db = datakamus.getWritableDatabase();

        datakamus.createTable(db);

        datakamus.generateData(db);



        setContentView(R.layout.main);

        txtInggris = (EditText) findViewById(R.id.txtInggris);
        txtIndonesia = (EditText) findViewById(R.id.txtIndonesia);



    



    public void getTerjemahan(View view) 

        String result = "";

        String englishword = txtInggris.getText().toString();

        kamusCursor = db.rawQuery("SELECT ID, INGGRIS, INDONESIA " + "FROM kamus where INGGRIS='" + englishword + "' ORDER BY INGGRIS", null);



        if (kamusCursor.moveToFirst()) 

            result = kamusCursor.getString(2);

            for (; !kamusCursor.isAfterLast(); kamusCursor.moveToNext()) 

                result = kamusCursor.getString(2);

                

        

        if (result.equals("")) 

            result = "Terjemahan Not Found";

        

        txtIndonesia.setText(result);



    

    @Override

    public void onDestroy() 

        super.onDestroy();

        kamusCursor.close();

        db.close();

    

提前谢谢..

xml 文件..main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_
    android:layout_
    android:orientation="vertical" >

     <TextView 
         android:layout_
        android:layout_ 
        android:text="Kamus Inggris Indonesia" />

     <TextView 
        android:text="Inggris :" 
        android:id="@+id/TextView01"
        android:layout_ 
        android:layout_></TextView>

    <EditText 
        android:text="" 
        android:id="@+id/txtInggris"
        android:layout_ 
        android:layout_></EditText>

    <Button 
        android:text="Terjemahkan" 
        android:id="@+id/btnTerjemah"
        android:layout_
        android:layout_
        android:onClick="getTerjemahan"></Button>

    <TextView 
        android:text="Indonesia :" 
        android:id="@+id/TextView03"
        android:layout_ 
        android:layout_></TextView>

    <EditText 
        android:text="" 
        android:id="@+id/txtIndonesia"
        android:layout_ 
        android:layout_
        android:editable="false"></EditText>

</LinearLayout>

【问题讨论】：

嗯，请您发布您的按钮的 xml 吗？

还有，把你的“setContentView(R.layout.main);”在 super.OnCreate 之后，他们把 datakamus = new ....

@Coeus 添加了 xml 文件.. ^_^

太棒了！看起来不错，你有没有按照我说的做？

你有错误的类，它说它在 indo.tora.kamus.KamusActivity 中期待它，而不是 indo.tora.kamus.ShowKamus .

【参考方案1】：

看起来您的KamusActivity 使用main.xml 作为内容视图，但您没有将getTerjemahan 添加到此类。

所以你应该添加

 public void getTerjemahan(View view) 
    //your code
 

到KamusActivity。