eclipse 使用按钮在 Android SDK 中切换视图

Using buttons to switch views with Android SDK

提问by meburbo

I'm having trouble switching views with button presses in my Android app. The code shows no errors in Eclipse, but the app quits unexpectedly in the emulator when the button is clicked. My code is below. Thanks

我在我的 Android 应用程序中无法通过按下按钮来切换视图。代码在 Eclipse 中没有显示错误，但是当单击按钮时，应用程序在模拟器中意外退出。我的代码如下。谢谢

public class Main extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button go = (Button)findViewById(R.id.goButton);
        go.setOnClickListener(mGoListener);     
    }

    private OnClickListener mGoListener = new OnClickListener() {
    public void onClick(View v) {           
            Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.setClassName("android.taboo.Activities", "android.taboo.Activities.MainMenu");
            startActivity(intent);
        }
    };
}

public class MainMenu extends Activity{
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mainmenu);

        TextView quickStart = (TextView)findViewById(R.id.quickStart);
        quickStart.setOnClickListener(mQuickStartListener);

        TextView gameSetup = (TextView)findViewById(R.id.gameSetup);
        gameSetup.setOnClickListener(mGameSetupListener);

        TextView settings = (TextView)findViewById(R.id.settings);
        settings.setOnClickListener(mSettingsListener);

        TextView wordEntry = (TextView)findViewById(R.id.wordEntry);
        wordEntry.setOnClickListener(mWordEntryListener);
    }

    //Listeners for MainMenu navigation buttons
    private OnClickListener mQuickStartListener = new OnClickListener() {
        public void onClick(View v) {
          setContentView(R.layout.quickstart);
        }
    };
    private OnClickListener mGameSetupListener = new OnClickListener() {
        public void onClick(View v) {
          setContentView(R.layout.gamesetup);
        }
    };
    private OnClickListener mSettingsListener = new OnClickListener() {
        public void onClick(View v) {
          setContentView(R.layout.settings);
        }
    };
    private OnClickListener mWordEntryListener = new OnClickListener() {
        public void onClick(View v) {
          setContentView(R.layout.word);
        }
    };
}

采纳答案by prolink007

Take a look at this code that i have here, this should help you out some.

看看我在这里的这段代码，这应该对你有所帮助。

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

public class SmartApp extends Activity
{
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.intro);

        final Button firstTimeButton = (Button) findViewById(R.id.firstTimeButton);
        firstTimeButton.setOnClickListener(
                new View.OnClickListener()
        {
                        @Override
                        public void onClick(View v)
                        {
                                // TODO Auto-generated method stub
                                Intent userCreationIntent = new Intent(v.getContext(), UserCreation.class);
                                startActivityForResult(userCreationIntent, 0);
                        }
                });
    }
}

When the user clicks the "first time button" the user will be taken to the "user creation page". I believe in your code you have a few things wrong. Compare yours to what i provided and you should be able to see the differences and make the appropriate modifications. Let me know if this helps!

当用户点击“第一次按钮”时，用户将被带到“用户创建页面”。我相信你的代码有一些错误。将您的与我提供的进行比较，您应该能够看到差异并进行适当的修改。如果这有帮助，请告诉我！