android-APP-bluetooth

package main.activity01;

import android.app.Activity;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.os.Bundle;
import android.text.method.KeyListener;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

/***************************************************
 * 创建activity要点
 * 1.一个activity就是一个类，并且这个activity要继承Activity
 * 2.需要重写onCreate方法
 * 3。每一个activity都需要在AndroidManifest里面注册
 * 4.为activity添加必要的控件
 * */
public class Activity01 extends Activity {
    private Button mybutton=null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity01);
        mybutton    =    (Button)findViewById(R.id.button1);
        mybutton.setOnClickListener(new Button.OnClickListener() {
               public void onClick(View v)
               {
                   //创建一个intent对象
                    Intent intent    = new Intent();
                    intent.setClass(Activity01.this, otheractivity.class);
                    Activity01.this.startActivity(intent);
               }
          });
    }
}

package main.activity01;

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

public class otheractivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.other);
    }    
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    tools:context="${relativePackage}.${activityClass}" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:text="copener" />

</RelativeLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    tools:context="${relativePackage}.${activityClass}" >

    <TimePicker
        android:id="@+id/timePicker1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="main.activity01"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".Activity01"
            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=".otheractivity"
               android:label="@string/otheractivity_name" >            
        </activity>
    </application>

</manifest>

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

    <string name="app_name">activity01</string>
    <string name="hello_world">copener first Android APP</string>
     <string name="otheractivity_name">otheractivity</string>

</resources>