package com.wenix.androidcameramonitor;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
import android.widget.EditText;
import android.widget.TableLayout;

public class GetIP extends Activity {
String ipname = null;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 设置全屏
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);

final Builder builder = new AlertDialog.Builder(this); // 定义一个AlertDialog.Builder对象
builder.setTitle("登录服务器对话框"); // 设置对话框的标题

// 装载/res/layout/login.xml界面布局
TableLayout loginForm = (TableLayout) getLayoutInflater().inflate(
R.layout.login, null);
final EditText iptext = (EditText) loginForm
.findViewById(R.id.ipedittext);
builder.setView(loginForm); // 设置对话框显示的View对象
// 为对话框设置一个“登录”按钮
builder.setPositiveButton("登录"
// 为按钮设置监听器
, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 此处可执行登录处理
ipname = iptext.getText().toString().trim();
Bundle data = new Bundle();
data.putString("ipname", ipname);
Intent intent = new Intent(GetIP.this, MainActivity.class);
intent.putExtras(data);
startActivity(intent);
}
});
// 为对话框设置一个“取消”按钮
builder.setNegativeButton("取消", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 取消登录，不做任何事情。
System.exit(1);
}
});
// 创建、并显示对话框
builder.create().show();
}
}

获取ip后就跳转到MainActivity。

package com.wenix.androidcameramonitor;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;

import android.app.Activity;
import android.content.Intent;
import android.graphics.ImageFormat;
import android.graphics.Rect;
import android.graphics.YuvImage;
import android.hardware.Camera;
import android.hardware.Camera.Size;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.Window;
import android.view.WindowManager;

public class MainActivity extends Activity {
SurfaceView sView;
SurfaceHolder surfaceHolder;
int screenWidth, screenHeight;
Camera camera; // 定义系统所用的照相机
boolean isPreview = false; // 是否在浏览中
private String ipname;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 设置全屏
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);

// 获取IP地址
Intent intent = getIntent();
Bundle data = intent.getExtras();
ipname = data.getString("ipname");