java Android应用程序错误：

Question

我是一个初学者开发人员，我正在制作一个应用程序。 我得到了错误：令牌上的语法错误，构造错误。 这是我的主要活动。java文件：

package com.example.goldennuggetnlapp;

import 安卓.os.Bundle;
import 安卓.view.View;
import 安卓.app.Activity;
import 安卓.content.Intent;
import 安卓.view.Menu;

public class MainActivity extends Activity { 
    /** Called when the user clicks the Send button */
    public void sendMessage(View view) {
        // Do something in response to button
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void myClickHandler(View v){
        startActivity(new Intent(this, InformationActivity.class));

     }
    import 安卓.app.Activity;

    import 安卓.os.Bundle;

    import 安卓.view.View;

    import 安卓.view.View.OnClickListener;

    import 安卓.widget.Button;

我不知道怎么修理它。有人能帮我吗

Answer 1

package com.example.goldennuggetnlapp;

import android.os.Bundle;
import android.view.View;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity { 

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

/** Called when the user clicks the Send button */
    public void sendMessage(View view) {
        // Do something in response to button
    }

    public void myClickHandler(View v){
        startActivity(new Intent(this, InformationActivity.class));

     }
}

Answer 2

试着这样做：

package com.example.goldennuggetnlapp;

import android.view.View;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity { 

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

    /** Called when the user clicks the Send button */
    public void sendMessage(View view) {
        // Do something in response to button
    }

    public void myClickHandler(View v){
        startActivity(new Intent(this, InformationActivity.class));

     }
    // more code goes here
}

Answer 3

在Java中，所有导入语句都必须位于文件的开头（如果有包声明的话，就在包声明之后）。因此，您必须将所有导入语句移到顶部

Answer 4

让你的班级像这样

package com.example.goldennuggetnlapp;

import android.os.Bundle;
import android.view.View;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;

public class MainActivity extends Activity { 
    /** Called when the user clicks the Send button */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    }

    public void sendMessage(View view) {
        // Do something in response to button
    }


    public void myClickHandler(View v){
        startActivity(new Intent(this, InformationActivity.class));

     }

您已导入活动中不可接受的部分