简单的三方登录SDK示例，Android Activity之间数据的传递

先建立Library工程，即普通工程然后在Android的属性勾选Library选项。

这里建立的工程为 mySdk ，Activity名为LoginActivity。

LoginActivity代码：

package com.example.mysdk;

import android.os.Bundle;
import android.os.Debug;
import android.R.integer;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class LoginActivity extends Activity implements OnClickListener {

	EditText usernameEditText,passwdEditText;
	Button loginButton,calcelbButton;
	TextView appidTextView;
	
	public Context mContext;
	public String m_appId;
	public Intent m_intent;
	
	
	public void Init(Context context,String appId)
	{
		mContext=context;
		m_appId=appId;
	}
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.loginlayout);

		appidTextView=(TextView)findViewById(R.id.appidTextView);
		
		usernameEditText=(EditText)findViewById(R.id.usernameTextEdit);
		passwdEditText=(EditText)findViewById(R.id.passwdTextEidt);
		
		loginButton=(Button)findViewById(R.id.buttonLogin);
		calcelbButton=(Button)findViewById(R.id.buttonCalcel);
		
		loginButton.setOnClickListener(this);
		calcelbButton.setOnClickListener(this);
		
		m_intent=this.getIntent();
		Bundle bundle=m_intent.getBundleExtra("bundle");
		String appidString=bundle.getString("AppID");
		judgeAppId(appidString);
		

	}
	
	@Override
	public void onClick(View v)
	{
		int resId=v.getId();
		if(resId==R.id.buttonLogin)
		{
			Log.d("mysdk", "buttonLogin Click");
			StringBuffer stringBuffer=new StringBuffer();
			stringBuffer.append("name:"+usernameEditText.getText());
			stringBuffer.append("passwd:"+usernameEditText.getText());
			
			Toast toast=Toast.makeText(this, stringBuffer.toString(), Toast.LENGTH_LONG);
			toast.show();
			
			Bundle resultBundle=new Bundle();

			
			
			
			//判断帐号密码是否正确，正确就返回正确到前一个Activity
			if("Misstea".equals(usernameEditText.getText().toString().trim()) && "Misstea".equals(passwdEditText.getText().toString().trim()))
			{
				Log.d("mysdk", "密码正确");
				resultBundle.putInt("resultInt", 1); //密码正确,返回获取到的userId
				resultBundle.putString("userId", "012312334234");
				m_intent.putExtra("resultBundle", resultBundle);
				
			}
			else
			{
				Log.d("mysdk", "密码错误");
				resultBundle.putInt("resultInt", -1);   //密码错误
				m_intent.putExtra("resultBundle", resultBundle); 
			}
			
			this.setResult(RESULT_OK,m_intent);
			this.finish();
		}
		else if(resId==R.id.buttonCalcel)
		{
			Log.d("mysdk", "buttonCalcel Click");
			this.finish();
		}
	}

	@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;
	}
	
	public void judgeAppId(String appId)
	{
		if(appId.equals("123456"))
		{
			Log.d("mysdk", "AppId is ok"+appId);
			appidTextView.setText(appId);
		}
		else 
		{
			Log.d("mysdk", "AppId is false"+appId);
			appidTextView.setText("appid错误");
		}
	}
	
	

}

mySDK Manifest文件：

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

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

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

loginlayout.xml

<RelativeLayout 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=".LoginActivity" >

    <EditText
        android:id="@+id/usernameTextEdit"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="68dp"
        android:ems="10" />

    <EditText
        android:id="@+id/passwdTextEidt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/usernameTextEdit"
        android:layout_below="@+id/usernameTextEdit"
        android:layout_marginTop="34dp"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/buttonLogin"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/passwdTextEidt"
        android:layout_marginTop="38dp"
        android:layout_toRightOf="@+id/textView2"
        android:text="登录" />

    <Button
        android:id="@+id/buttonCalcel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/buttonLogin"
        android:layout_alignBottom="@+id/buttonLogin"
        android:layout_alignRight="@+id/passwdTextEidt"
        android:layout_marginRight="20dp"
        android:text="取消" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/passwdTextEidt"
        android:layout_alignParentLeft="true"
        android:layout_alignTop="@+id/usernameTextEdit"
        android:text="帐号：" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/passwdTextEidt"
        android:layout_alignLeft="@+id/textView1"
        android:layout_alignTop="@+id/passwdTextEidt"
        android:text="密码：" />

    <TextView
        android:id="@+id/appidTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:text="" />

</RelativeLayout>

mySDK 登录界面的预览

好了，mySDK就写完了。

然后新建一个Android工程来调用mySDK这个Library。这里新建工程为 UseMySdk。

在UseMySdk 工程属性Android里面加入mySDK Library。

下面是代码已经界面文件。

MainActivity

package com.example.usemysdk;

import android.os.Bundle;
import android.os.Debug;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

import com.example.mysdk.*;

public class MainActivity extends Activity {

	Button LoginButton;
	TextView textView;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		textView=(TextView)findViewById(R.id.textView1);
		
		LoginButton=(Button)findViewById(R.id.button1);
		LoginButton.setOnClickListener(new OnClickListener() {
		
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Log.d("UseMySdk", "LoginButton Click");
				
				String AppId="123456";
				Bundle bundle=new Bundle();
				bundle.putString("AppID", AppId);
				
				Intent intent=new Intent();
				intent.putExtra("bundle", bundle);
				intent.setClassName(getApplication(), "com.example.mysdk.LoginActivity");
				startActivityForResult(intent, 0);
				
			}
		});
		
	}
	
	@Override
	protected void onActivityResult(int requestCode,int resultCode,Intent intent)
	{
		switch (resultCode) 
		{
			case RESULT_OK:
				Bundle bundle=intent.getBundleExtra("resultBundle");
				int resultInt=bundle.getInt("resultInt");
				
				
				if(resultInt==1)//登录成功
				{
					Log.d("UseMySdk", "登录成功！");
					//获取userId
					String userIdString=bundle.getString("userId");
					textView.setText(userIdString);
				}
				else
				{
					Log.d("UseMySdk", "登录失败！");
				}
				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;
	}

}

activity_main.xml

<RelativeLayout 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=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="64dp"
        android:text="Button" />

</RelativeLayout>

UseMySdk Manifest.xml

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.usemysdk.MainActivity"
            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.mysdk.LoginActivity"></activity>
    </application>

</manifest>

在UseMySdk  Manifest中有个很重要的：

一定要注册mysdk的Activity，不然程序会崩溃找不到需要start的Activity

<activity android:name="com.example.mysdk.LoginActivity"></activity>

界面预览图

三方平台登录流程：

1.打开程序，点击登录按钮，跳到三方平台SDK的登录界面

2.在三方平台界面登录后，返回登录结果，如果登录成功，还会返回三方平台的userID。

3.程序获取到了登录成功标志，以三方平台userID作为用户名登录程序。