写android程序时怎么创建一个没有界面的程序啊，我想写一个服务程序。

一、

package com.example.zhuanhuan

import java.io.FileInputStream

import java.io.FileNotFoundException

import java.io.IOException

import com.example.zhuanhuan.MainActivity

import com.example.zhuanhuan.R

import com.example.zhuanhuan.KkkActivity

import android.os.Bundle

import android.os.Environment

import android.app.Activity

import android.content.Intent

import android.view.Menu

import android.view.View

import android.view.View.OnClickListener

import android.widget.Button

import android.widget.EditText

import android.widget.Toast

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState)

setContentView(R.layout.activity_main)

Button zhuceButton = (Button) findViewById(R.id.button2)

Button dengluButton = (Button) findViewById(R.id.button1)

final EditText yonghumingEditText = (EditText) findViewById(R.id.editText1)

final EditText mimaEditText = (EditText) findViewById(R.id.editText2)

zhuceButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Intent intent = new Intent()

intent.setClass(MainActivity.this, KkkActivity.class)

startActivity(intent)

}

}

dengluButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

try {

FileInputStream fis = new FileInputStream(Environment.getExternalStorageDirectory().getPath()+"/"+ yonghumingEditText.getText().toString())

byte[] input = new byte[fis.available()]

while(fis.read(input) != -1 )

fis.close()

//Toast.makeText(getApplicationContext(), new String(input), Toast.LENGTH_SHORT).show()

String mimaString = new String(input)

if (mimaString.equals(mimaEditText.getText().toString())==true) {

Toast.makeText(getApplicationContext(), "成功登陆", Toast.LENGTH_SHORT).show()

Intent intent = new Intent()

intent.setClass(MainActivity.this, QqqActivity.class)

startActivity(intent)

}

else {

Toast.makeText(getApplicationContext(), "用户名或密码错误", Toast.LENGTH_SHORT).show()

}

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace()

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace()

}

}

})

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menuthis adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu)

return true

}

}

二、

package com.example.zhuanhuan

import java.security.PublicKey

import android.os.Bundle

import android.app.Activity

import android.content.Intent

import android.view.Menu

import android.view.View

import android.view.View.OnClickListener

import android.widget.Button

import android.widget.Toast

public class QqqActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState)

setContentView(R.layout.qqq)

Button fanhuiButton = (Button) findViewById(R.id.button2)

Button jianceButton = (Button) findViewById(R.id.button1)

jianceButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Toast.makeText(getApplicationContext(), "注册成功", Toast.LENGTH_SHORT).show()

Intent new = new Intent()

intent.setClass(QqqActivity.this, MainActivity.class)

startActivity(intent)

}

})

fanhuiButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Intent intent = new Intent()

intent.setClass(QqqActivity.this, AaaActivity.class)

startActivity(intent)

}

})

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menuthis adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.qqq, menu)

return true

}

}

三、

package com.example.zhuanhuan

import java.io.File

import java.io.FileNotFoundException

import java.io.FileOutputStream

import java.io.IOException

import com.example.zhuanhuan.MainActivity

import com.example.zhuanhuan.R

import android.os.Bundle

import android.os.Environment

import android.app.Activity

import android.content.Intent

import android.view.Menu

import android.view.View

import android.view.View.OnClickListener

import android.widget.Button

import android.widget.EditText

public class KkkActivity extends Activity {

private File writeFile

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState)

setContentView(R.layout.kkk)

Button backButton = (Button) findViewById(R.id.button1)

final EditText yonghumingEditText = (EditText) findViewById(R.id.editText1)

final EditText mimaEditText = (EditText) findViewById(R.id.editText2)

backButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

File writeFile = new File(Environment.getExternalStorageDirectory().getPath(), yonghumingEditText.getText().toString())

if (!writeFile.exists()) {

try {

writeFile.createNewFile()

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace()

}

}

String abcString = mimaEditText.getText().toString()

FileOutputStream fos

try {

for = new FileOutputStream(writeFile)

fos.write(abcString.getBytes())

fos.flush()

fos.close()

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace()

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace()

}

Intent intent = new Intent()

intent.setClass(KkkActivity.this, MainActivity.class)

startActivity(intent)

}

})

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menuthis adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.kkk, menu)

return true

}

}

四、

package com.example.zhuanhuan

import android.os.Bundle

import android.app.Activity

import android.content.Intent

import android.view.Menu

import android.view.View

import android.view.View.OnClickListener

import android.widget.Button

public class AaaActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState)

setContentView(R.layout.aaa)

Button jianceButton = (Button) findViewById(R.id.button1)

jianceButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Intent intent = new Intent()

intent.setClass(AaaActivity.this, QqqActivity.class)

startActivity(intent)

}

})

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menuthis adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.aaa, menu)

return true

}

}

最近在做一个项目，接收手机短信，获取其中的验证码，然后发给后端保存，这个功能很简单，事实上，这个功能也确实不需要什么界面，主要装了这个服务的apk就可以了。

怎么做到app没有界面呢?

对的，使用这个主题就搞定了。

为了适配6.0，需要如下 *** 作：

完结！！！

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