我有一个与 mysql 相关的小型项目。我尝试了多种方式将 android 与 mysql 连接起来，例如
- 将它们更改为 127.0.0.1
- 将它们更改为 ip
- 将它们更改为 10.0.2.2 并在 eclipse 上设置
我已经尝试了两个星期，但我做不到。
我的笔记本是dell vostro 3450 64 bits
**ps 如果我向真实主机询问 URL，您介意吗？
这是我的代码。
获取json.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
<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>
活动列.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;
}
}