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                        /Android攻城狮的第一门课（入门篇）

我看了好几遍了代码没差为什么会停止运行

package com.example.demon;

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

public class FActivity extends Activity {
	private Button bt1;
	private Context mContext;
	
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.factivity);
		/*通过bt1实现跳转
		 * 1.startactivity
		 * 
		 * */
		mContext = this;
		bt1 = (Button) findViewById(R.id.button1);
		
		bt1.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				Intent intent = new Intent(mContext, SActivity.class);
				startActivity(intent);
			}
		});
	}
}

package com.example.demon;

import android.app.Activity;
import android.os.Bundle;

public class SActivity extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.sactivity);
	}
}

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

    <Button
        android:id="@+id/button1_irst"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="第一种启动方式" />

    <Button
        android:id="@+id/button2_second"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="第二种启动方式" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="把第二个页面回传的数据显示出来" />

</LinearLayout>

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

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.demon"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="13"
        android:targetSdkVersion="19" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        
       
        
        <activity
            android:name="com.example.demon.FActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        
        <activity
            android:name="com.example.demon.SActivity"
            android:label="@string/app_name" >
            
        </activity>
    </application>

</manifest>