安卓，点击了我同意，就崩溃了

MainActivity.java

 package com.ample.receive;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;

public class MainActivity extends Activity implements OnClickListener{
    private TextView myTextView1;
    private TextView myTextView2;
    private CheckBox myCheckBox;
    private Button myButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myCheckBox=(CheckBox)findViewById(R.id.myCheckBox);
        myCheckBox.setChecked(false);
        myCheckBox.setOnClickListener(this);
        myButton=(Button)findViewById(R.id.myButton);
        myButton.setEnabled(false);
        myButton.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.myCheckBox:
            if (myCheckBox.isChecked())
            {
                myButton.setEnabled(true);
                myTextView2.setText("abc");
            }
            else
            {
                myButton.setEnabled(false);
                myTextView1.setText(R.string.text);
                myTextView2.setText(R.string.no);
            }
            break;
        case R.id.myButton:
            if (myCheckBox.isChecked())
            {
                myTextView1.setText(R.string.ok);
            }
            break;
        default:break;
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

错误很明显，是空的对象，你的TextView在setText之前，要记得findviewbyId，否则就会出现这个错误。
myTextView1=(TextView)findViewById(R.id.myTextView1); myTextView2=(TextView)findViewById(R.id.myTextView2);把这两句放在onCreate里面就可以了。

activity_main.xml

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.ample.receive.MainActivity"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/myTextView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/text"
        android:textSize="20sp" />

    <TextView
        android:id="@+id/myTextView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <CheckBox 
        android:id="@+id/myCheckBox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/agree"
        android:textSize="20sp" />

    <Button 
        android:id="@+id/myButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/sure"
        android:textSize="20sp" />

</LinearLayout>

strings.xml

 <?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">约定</string>
    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
    <string name="text">加入本组织,就得服从组织上的安排</string>
    <string name="agree">我同意</string>
    <string name="sure">确定</string>
    <string name="no">请勾选我同意</string>
    <string name="ok">你已同意了</string>

</resources>

TextView组件没有初始化( myTextView1和myTextView2)

看log日志啊大兄弟，空指针。而且日志里面很清晰地写出了是TextView对象。。。

TextView没有初始化这是一点，CheckBox的事件是选中事件，你写成点击事件了