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java - 如何在 Android 中使用 PHP MYSQL 更新数据

转载 作者:行者123 更新时间:2023-11-29 05:27:22 24 4
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我正在编写一个应用程序,我需要在其中使用 PHP MySQL 更新数据,并且每次我都收到消息“更新数据成功”。但是每当我查看我的数据库时,我都没有得到任何值的变化。

Logcat 说:

  09-04 12:00:50.176: D/gralloc_goldfish(538): Emulator without GPU emulation detected.
09-04 12:08:38.646: D/InputEventConsistencyVerifier(538): KeyEvent: ACTION_UP but key was not down.
09-04 12:08:38.646: D/InputEventConsistencyVerifier(538): in com.android.internal.view.menu.ExpandedMenuView@4136ec30
09-04 12:08:38.646: D/InputEventConsistencyVerifier(538): 0: sent at 552986000000, KeyEvent { action=ACTION_UP, keyCode=KEYCODE_MENU, scanCode=229, metaState=0, flags=0x8, repeatCount=0, eventTime=552986, downTime=552899, deviceId=0, source=0x101 }
09-04 12:08:39.885: D/(538): UserLoginAppointmentActivity txtPhone[before] :: android.widget.EditText@41389238
09-04 12:08:39.885: D/(538): UserLoginAppointmentActivity txtPass[before] :: android.widget.EditText@4138acb0
09-04 12:08:40.205: W/TextLayoutCache(538): computeValuesWithHarfbuzz -- need to force to single run
09-04 12:08:42.976: D/dalvikvm(538): GC_CONCURRENT freed 131K, 3% free 10157K/10375K, paused 6ms+4ms
09-04 12:08:46.357: D/InputEventConsistencyVerifier(538): KeyEvent: ACTION_UP but key was not down.
09-04 12:08:46.357: D/InputEventConsistencyVerifier(538): in android.widget.EditText@4138acb0
09-04 12:08:46.357: D/InputEventConsistencyVerifier(538): 0: sent at 561313000000, KeyEvent { action=ACTION_UP, keyCode=KEYCODE_TAB, scanCode=15, metaState=0, flags=0x8, repeatCount=0, eventTime=561313, downTime=561190, deviceId=0, source=0x101 }
09-04 12:08:49.746: D/(538): UserLoginAppointmentActivity txtPhone :: android.widget.EditText@41389238
09-04 12:08:49.746: D/(538): UserLoginAppointmentActivity txtPass :: android.widget.EditText@4138acb0
09-04 12:08:50.066: D/(538): UserLoginAppointmentActivity resultServer :: {"StatusID":"1","UserID":"24","Error":"Login Ok"}
09-04 12:08:50.066: D/(538): UserLoginAppointmentActivity strStatusID[before] :: 0
09-04 12:08:50.066: D/(538): UserLoginAppointmentActivity strUserID[before] :: 0
09-04 12:08:50.066: D/(538): UserLoginAppointmentActivity strError[before] :: Unknow Status!
09-04 12:08:50.066: D/(538): UserLoginAppointmentActivity strStatusID[after] :: 1
09-04 12:08:50.076: D/(538): UserLoginAppointmentActivity strUserID[after] :: 24
09-04 12:08:50.076: D/(538): UserLoginAppointmentActivity strError[after] :: Login Ok
09-04 12:08:50.105: D/(538): UserLoginAppointmentActivity UserID Intent :: 24
09-04 12:08:51.496: D/dalvikvm(538): GC_CONCURRENT freed 204K, 4% free 10345K/10695K, paused 5ms+5ms
09-04 12:08:55.475: D/(538): sAppointmentID :: 24
09-04 12:08:55.475: D/(538): sAppointmentID :: 53
09-04 12:08:56.166: D/(538): resultServer - getByMemberIDR:: {"UserID":"24","AppointmentID":"53","Type":"Cardiology","Date":"12-09-2013","Time":"22:15","Status":"Pending"}
09-04 12:08:56.166: D/(538): strUserID :: 24
09-04 12:08:56.176: D/(538): strAppointmentID :: 53
09-04 12:08:56.176: D/(538): strType :: Cardiology
09-04 12:08:56.176: D/(538): strDate :: 12-09-2013
09-04 12:08:56.176: D/(538): strTime :: 22:15
09-04 12:11:06.866: D/dalvikvm(538): GC_CONCURRENT freed 278K, 4% free 10459K/10887K, paused 7ms+7ms
09-04 12:15:36.425: D/(538): resultServer - updateData:: {"StatusID":"1","Message":"updated"}
09-04 12:15:37.015: D/dalvikvm(538): GC_CONCURRENT freed 330K, 5% free 10572K/11015K, paused 7ms+9ms

PHP 脚本:

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

$strUserID = $_POST["sUserID"];
$strAppointmentID = $_POST["sAppointmentID"];

$strType = $_POST["sType"];
$strDate = $_POST["sDate"];
$strTime = $_POST["sTime"];

/*** Update ***/
$strSQL = " UPDATE book_appointment SET
Type = '".$strType."',
Date = '".$strDate."',
Time = '".$strTime."'
WHERE AppointmentID = '".$strAppointmentID."' ";

$objQuery = mysql_query($strSQL);
if(!$objQuery)
{
$arr['StatusID'] = "0";
$arr['Message'] = "Cannot save data!";
}
else
{
$arr['StatusID'] = "1";
$arr['Message'] = "updated";
}
mysql_close($objConnect);
echo json_encode($arr);
?>

UpdateActivity.java:-

public class UpdateActivity extends Activity {

private static final String tag = null;

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

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

showInfo();

// btnSave
Button btnSave = (Button) findViewById(R.id.btnSave);
// Perform action on click
btnSave.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(SaveData())
{
// When Save Complete
Intent newActivity = new Intent(UpdateActivity.this,RescheduleActivity.class);
startActivity(newActivity);
}
}
});


// btnCancel
final Button btnCancel = (Button) findViewById(R.id.btnCancel);
// Perform action on click
btnCancel.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent newActivity = new Intent(UpdateActivity.this,RescheduleActivity.class);
startActivity(newActivity);
}
});

}

public void showInfo()
{
// txtMemberID,txtUsername,txtPassword,txtConPassword,txtName,txtEmail,txtTel
final TextView tUserID = (TextView)findViewById(R.id.txtUserID);
final TextView tAppointmentID = (TextView)findViewById(R.id.txtAppointmentID);
final TextView tType = (TextView)findViewById(R.id.txtType);
final TextView tDate = (TextView)findViewById(R.id.txtDate);
final TextView tTime = (TextView)findViewById(R.id.txtTime);


Button btnSave = (Button) findViewById(R.id.btnSave);
Button btnCancel = (Button) findViewById(R.id.btnCancel);

String url = "http://10.0.2.2/appointments/getByMemberIDR.php";

Intent intent= getIntent();
final String UserID = intent.getStringExtra("UserID");
final String AppointmentID = intent.getStringExtra("AppointmentID");

List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("sUserID", UserID));
params.add(new BasicNameValuePair("sAppointmentID", AppointmentID));

String resultServer = getHttpPost(url,params);
Log.d(tag, "resultServer - getByMemberIDR:: " + resultServer);

String strUserID = "";
String strAppointmentID = "";
String strType = "";
String strDate = "";
String strTime = "";

JSONObject c;
try {
c = new JSONObject(resultServer);

strUserID = c.getString("UserID");
Log.d(tag, "strUserID :: " + strUserID);
strAppointmentID = c.getString("AppointmentID");
Log.d(tag, "strAppointmentID :: " + strAppointmentID);
strType = c.getString("Type");
Log.d(tag, "strType :: " + strType);
strDate = c.getString("Date");
Log.d(tag, "strDate :: " + strDate);
strTime = c.getString("Time");
Log.d(tag, "strTime :: " + strTime);

if(!strUserID.equals(""))
{
tUserID.setText(strUserID);
tAppointmentID.setText(strAppointmentID);
tType.setText(strType);
tDate.setText(strDate);
tTime.setText(strTime);
}
else
{
tUserID.setText("====");
tAppointmentID.setText("====");
tType.setText("====");
tDate.setText("====");
tTime.setText("====");
btnSave.setEnabled(false);
btnCancel.requestFocus();
}

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


public boolean SaveData()
{
// txtMemberID,txtPassword,txtName,txtEmail,txtTel

final EditText txtType = (EditText)findViewById(R.id.txtType);
final EditText txtDate = (EditText)findViewById(R.id.txtDate);
final EditText txtTime = (EditText)findViewById(R.id.txtTime);

//Dialog
final AlertDialog.Builder ad = new AlertDialog.Builder(this);

ad.setTitle("Error! ");
ad.setIcon(android.R.drawable.btn_star_big_on);
ad.setPositiveButton("Close", null);

String url = "http://10.0.2.2/appointments/updateData.php";

List<NameValuePair> params = new ArrayList<NameValuePair>();

params.add(new BasicNameValuePair("sType", txtType.getText().toString()));
params.add(new BasicNameValuePair("sDate", txtDate.getText().toString()));
params.add(new BasicNameValuePair("sTime", txtTime.getText().toString()));

String resultServer = getHttpPost(url,params);
Log.d(tag, "resultServer - updateData:: " + resultServer);

/*** Default Value ***/
String strStatusID = "0";
String strMessage = "Unknow Status!";

JSONObject c;
try {
c = new JSONObject(resultServer);
strStatusID = c.getString("StatusID");
strMessage = c.getString("Message");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

// Prepare Save Data
if(strStatusID.equals("0"))
{
ad.setMessage(strMessage);
ad.show();
return false;
}
else
{
Toast.makeText(UpdateActivity.this, "Update Data Successfully", Toast.LENGTH_SHORT).show();
}

return true;
}

public String getHttpPost(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) { // Status 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 result..");
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return str.toString();
}
}

最佳答案

我不确定,但我认为您应该需要在 SaveData() 中使用以下行:

    final TextView tUserID = (TextView)findViewById(R.id.txtUserID);
final TextView tAppointmentID = (TextView)findViewById(R.id.txtAppointmentID);

所以你的 SavaData() 应该是这样的:

public boolean SaveData()
{
final TextView txtUserID = (TextView)findViewById(R.id.txtUserID);
final TextView txtAppointmentID = (TextView)findViewById(R.id.txtAppointmentID);
final EditText txtType = (EditText)findViewById(R.id.txtType);
final EditText txtDate = (EditText)findViewById(R.id.txtDate);
final EditText txtTime = (EditText)findViewById(R.id.txtTime);

//Dialog
final AlertDialog.Builder ad = new AlertDialog.Builder(this);

ad.setTitle("Error! ");
ad.setIcon(android.R.drawable.btn_star_big_on);
ad.setPositiveButton("Close", null);

String url = "http://10.0.2.2/appointments/updateData.php";

List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("sUserID", txtUserID.getText().toString()));
params.add(new BasicNameValuePair("sAppointmentID", txtAppointmentID.getText().toString()));
params.add(new BasicNameValuePair("sType", txtType.getText().toString()));
params.add(new BasicNameValuePair("sDate", txtDate.getText().toString()));
params.add(new BasicNameValuePair("sTime", txtTime.getText().toString()));

String resultServer = getHttpPost(url,params);
Log.d(tag, "resultServer - updateData:: " + resultServer);

/*** Default Value ***/
String strStatusID = "0";
String strMessage = "Unknow Status!";

JSONObject c;
try {
c = new JSONObject(resultServer);
strStatusID = c.getString("StatusID");
strMessage = c.getString("Message");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

// Prepare Save Data
if(strStatusID.equals("0"))
{
ad.setMessage(strMessage);
ad.show();
return false;
}
else
{
Toast.makeText(UpdateActivity.this, "Update Data Successfully", Toast.LENGTH_SHORT).show();
}

return true;
}

我们知道您正在使用 UserID 和 AppointmentID 获取所有约会,因此每当您进行更改时,都需要特定的 UserID 和 AppointmentID 指向您已单击的那一行...可能是原因

请告诉我这个:)

关于java - 如何在 Android 中使用 PHP MYSQL 更新数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18606478/

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