Question

我有一个微型项目与mysql.I尝试很多方式连接android与mysql，如

将其更改为127.0.0.1
将其更改为ip
将它们更改为10.0.2.2并在eclipse peference上设置

我已经有两个星期了，但我做不到。
我的笔记本是dell vostro 3450 64位

** P.S。你介意我问过来自真实主机的网址吗？

这是我的代码。

getjson.php

<?
    $objConnect = mysql_connect("localhost","root","root");
    $objDB = mysql_select_db("mydatabase");

    // $_POST["txtKeyword"] = "a"; // for Sample

    $strKeyword = $_POST["txtKeyword"];
    $strSQL = "SELECT * FROM customer WHERE 1 AND Name LIKE '%".$strKeyword."%'  ";

    $objQuery = mysql_query($strSQL);
    $intNumField = mysql_num_fields($objQuery);
    $resultArray = array();
    while($obResult = mysql_fetch_array($objQuery))
    {
        $arrCol = array();
        for($i=0;$i<$intNumField;$i++)
        {
            $arrCol[mysql_field_name($objQuery,$i)] = $obResult[$i];
        }
        array_push($resultArray,$arrCol);
    }

    mysql_close($objConnect);

    echo json_encode($resultArray);
?>

activity_main.xml中

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/tableLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <TableRow
      android:id="@+id/tableRow1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content" >

     <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="Search Customer : "
        android:layout_span="1"
        android:textAppearance="?android:attr/textAppearanceMedium" />

     <EditText
         android:id="@+id/editText1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:ems="4" >

     </EditText>

     <Button
         android:id="@+id/button1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="OK" />

    </TableRow>

    <View
        android:layout_height="1dip"
        android:background="#CCCCCC" />

  <LinearLayout
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="0.1">   

     <ListView
         android:id="@+id/listView1"
         android:layout_width="match_parent"
         android:layout_height="wrap_content">
     </ListView>

    </LinearLayout>

    <View
        android:layout_height="1dip"
        android:background="#CCCCCC" />

    <LinearLayout
      android:id="@+id/LinearLayout1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:padding="5dip" >

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="By.. ThaiCreate.Com" />

    </LinearLayout>

</TableLayout>

的 activity_column.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linearLayout1" 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TextView
    android:id="@+id/ColCustomerID" 
        android:layout_width="0dp"
        android:layout_height="wrap_content" 
        android:layout_weight="0.2"
        android:text="CustomerID"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <TextView
        android:id="@+id/ColName" 
        android:layout_width="0dp"
        android:layout_height="wrap_content" 
        android:layout_weight="1.0"
        android:text="Name"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <TextView
        android:id="@+id/ColEmail"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Email"
        android:textAppearance="?android:attr/textAppearanceSmall" />

</LinearLayout>

MainActivity.java

package com.myapp;

public class MainActivity extends Activity {


    @SuppressLint("NewApi")
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Permission StrictMode
        if (android.os.Build.VERSION.SDK_INT > 9) {
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }

        final Button btn1 = (Button) findViewById(R.id.button1);
        // Perform action on click
        btn1.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                SearchData();
            }
        });

    }

    public void SearchData()
    {
         // listView1
        final ListView lisView1 = (ListView)findViewById(R.id.listView1);   

        // editText1
        final EditText inputText = (EditText)findViewById(R.id.editText1); 

        /**
         * [{"CustomerID":"C001","Name":"Win Weerachai","Email":"win.weerachai@thaicreate.com" ,"CountryCode":"TH","Budget":"1000000","Used":"600000"},
         * {"CustomerID":"C002","Name":"John Smith","Email":"john.smith@thaicreate.com" ,"CountryCode":"EN","Budget":"2000000","Used":"800000"},
         * {"CustomerID":"C003","Name":"Jame Born","Email":"jame.born@thaicreate.com" ,"CountryCode":"US","Budget":"3000000","Used":"600000"},
         * {"CustomerID":"C004","Name":"Chalee Angel","Email":"chalee.angel@thaicreate.com" ,"CountryCode":"US","Budget":"4000000","Used":"100000"}]
         */

        String url = "http://10.0.2.2/android/getJSON.php";

        // Paste Parameters
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        params.add(new BasicNameValuePair("txtKeyword", inputText.getText().toString()));

        try {
            JSONArray data = new JSONArray(getJSONUrl(url,params));

            final ArrayList<HashMap<String, String>> MyArrList = new ArrayList<HashMap<String, String>>();
            HashMap<String, String> map;

            for(int i = 0; i < data.length(); i++){
                JSONObject c = data.getJSONObject(i);

                map = new HashMap<String, String>();
                map.put("CustomerID", c.getString("CustomerID"));
                map.put("Name", c.getString("Name"));
                map.put("Email", c.getString("Email"));
                map.put("CountryCode", c.getString("CountryCode"));
                map.put("Budget", c.getString("Budget"));
                map.put("Used", c.getString("Used"));
                MyArrList.add(map);

            }


            SimpleAdapter sAdap;
            sAdap = new SimpleAdapter(MainActivity.this, MyArrList, R.layout.activity_column,
                    new String[] {"CustomerID", "Name", "Email"}, new int[] {R.id.ColCustomerID, R.id.ColName, R.id.ColEmail});      
            lisView1.setAdapter(sAdap);

            final AlertDialog.Builder viewDetail = new AlertDialog.Builder(this);
            // OnClick Item
            lisView1.setOnItemClickListener(new OnItemClickListener() {
                public void onItemClick(AdapterView<?> myAdapter, View myView,
                        int position, long mylng) {

                    String strCustomerID = MyArrList.get(position).get("CustomerID")
                            .toString();
                    String sName = MyArrList.get(position).get("Name")
                            .toString();
                    String strEmail = MyArrList.get(position).get("Email")
                            .toString();
                    String strCounryCode = MyArrList.get(position).get("CounryCode")
                            .toString();
                    String strBudget = MyArrList.get(position).get("Budget")
                            .toString();
                    String strUsed = MyArrList.get(position).get("Used")
                            .toString();

                    viewDetail.setIcon(android.R.drawable.btn_star_big_on);
                    viewDetail.setTitle("Member Detail");
                    viewDetail.setMessage("MemberID : " + strCustomerID + "\n"
                            + "Name : " + sName + "\n" 
                            + "strEmail : " + strEmail + "\n" 
                            + "strCounryCode : " + strCounryCode + "\n" 
                            + "strBudget : " + strBudget + "\n"
                            + "Used : " + strUsed);
                    viewDetail.setPositiveButton("OK",
                            new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog,
                                        int which) {
                                    // TODO Auto-generated method stub
                                    dialog.dismiss();
                                }
                            });
                    viewDetail.show();

                }
            });


        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }


    public String getJSONUrl(String url,List<NameValuePair> params) {
        StringBuilder str = new StringBuilder();
        HttpClient client = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);

        try {
            httpPost.setEntity(new UrlEncodedFormEntity(params));
            HttpResponse response = client.execute(httpPost);
            StatusLine statusLine = response.getStatusLine();
            int statusCode = statusLine.getStatusCode();
            if (statusCode == 200) { // Download OK
                HttpEntity entity = response.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                while ((line = reader.readLine()) != null) {
                    str.append(line);
                }
            } else {
                Log.e("Log", "Failed to download file..");
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return str.toString();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

Answer 1

试试这个：

$objConnect = mysql_connect("localhost","root","root");
if (! $objConnect)
{
  die('Could not connect: ' . mysql_error());
}

并检查客户端上的消息，如果它返回任何错误并显示给我们。

如何将android与mysql数据库连接？

1 个答案: