嗨，在下面的代码中点击报告按钮不会登录活动，即使它没有发生任何事情。 在登录活动中，首先我使用会话对象检查登录用户名和密码。 如果用户名和密码正常工作，然后想要转移到下一个活动。
任何人都可以帮助我解决这个问题。
Mainactivity.java
report1=(TextView)findViewById(R.id.report1);
report=(ImageView)findViewById(R.id.report);
report1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent i=new Intent(getApplicationContext(),Login.class);
startActivity(i);
}
});
report.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent i=new Intent(getApplicationContext(),Login.class);
startActivity(i);
}
});
在下面，当我为会话发表评论时，它正在移动但是在输入用户名和密码后，它显示了logcat管理员用户找到但没有进入下一个activity.it本身就停留在相同的活动中。
更新登录
public class Login extends Activity {
ImageButton login;
private static final Pattern USERNAME_PATTERN = Pattern
.compile("[a-zA-Z0-9]{1,250}");
private static final Pattern PASSWORD_PATTERN = Pattern
.compile("[a-zA-Z0-9+_.]{4,16}");
EditText usname,pword,ustype;
TextView tv,tv1;
Boolean isInternetPresent = false;
String username,password;
HttpPost httppost;
StringBuffer buffer;
String queryString;
String data="";
int i;
HttpResponse response;
HttpClient httpclient;
CheckBox mCbShowPwd;
SessionManager session;
private ProgressDialog progressDialog;
ConnectionDetector cd;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.login);
// session = new SessionManager(getApplicationContext());
// session.checkLogin();
// final HashMap<String, String> user = session.getUserDetails();
login = (ImageButton)findViewById(R.id.login);
usname = (EditText)findViewById(R.id.username);
pword= (EditText)findViewById(R.id.password);
ustype= (EditText)findViewById(R.id.usertype);
tv = (TextView)findViewById(R.id.tv);
tv1 = (TextView)findViewById(R.id.tv1);
mCbShowPwd = (CheckBox) findViewById(R.id.cbShowPwd);
cd = new ConnectionDetector(getApplicationContext());
mCbShowPwd.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (!isChecked) {
pword.setTransformationMethod(PasswordTransformationMethod.getInstance());
} else {
pword.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
}
}
});
login.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
new LoadViewTask().execute();
isInternetPresent = cd.isConnectingToInternet();
if (!isInternetPresent) {
showAlertDialog(Login.this, "No Internet Connection",
"You don't have internet connection.", true);
return;
}
String username = usname.getText().toString();
String password = pword.getText().toString();
// String name = user.get(SessionManager.KEY_USERNAME);
if (username.equals("")) {
Toast.makeText(Login.this, "ENTER USERNAME",
Toast.LENGTH_LONG).show();
}
if (password.equals("")) {
Toast.makeText(Login.this, "ENTER PASSWORD",
Toast.LENGTH_LONG).show();
}
else if (!CheckUsername(username) && !CheckPassword(password)){
Toast.makeText(Login.this, "ENTER VALID USERNAME & PASSWORD",
Toast.LENGTH_LONG).show();
}
else{
queryString = "username=" + username + "&password="
+ password ;
String usertype = DatabaseUtility.executeQueryPhp("login",queryString);
System.out.print(usertype);
if(usertype.equalsIgnoreCase("Admin user Found")){
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(Login.this, "Login Sucess",
Toast.LENGTH_LONG).show();
}
});
Intent in=new Intent(Login.this, Reports.class);
startActivity(in);
}
else if(usertype.equalsIgnoreCase("No User Found")){
runOnUiThread(new Runnable() {
public void run() {
tv1.setText("InValid UserName and Password");
}
});
}
}
}
});
}
private class LoadViewTask extends AsyncTask<Void, Integer, Void>
{
//Before running code in separate thread
@Override
protected void onPreExecute()
{
progressDialog = ProgressDialog.show(Login.this,"Loading...",
"Loading application View, please wait...", false, false);
progressDialog.show();
}
@Override
protected Void doInBackground(Void... params)
{
try
{
synchronized (this)
{
int counter = 0;
while(counter <= 4)
{
this.wait(850);
counter++;
publishProgress(counter*25);
}
}
}
catch (InterruptedException e)
{
e.printStackTrace();
}
return null;
}
@Override
protected void onProgressUpdate(Integer... values)
{
progressDialog.setProgress(values[0]);
}
@Override
protected void onPostExecute(Void result)
{
progressDialog.dismiss();
}
}
private boolean CheckPassword(String password) {
return PASSWORD_PATTERN.matcher(password).matches();
}
private boolean CheckUsername(String username) {
return USERNAME_PATTERN.matcher(username).matches();
}
@SuppressWarnings("deprecation")
public void showAlertDialog(Context context, String title, String message, Boolean status) {
AlertDialog alertDialog = new AlertDialog.Builder(context).create();
alertDialog.setTitle(title);
alertDialog.setMessage(message);
alertDialog.setIcon((status) ? R.drawable.success : R.drawable.fail);
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
});
alertDialog.show();
}
}
答案 0 :(得分：0)
不要使用应用程序的上下文，使用当前显示的视图的上下文。
report.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent i=new Intent(v.getContext(), Login.class);
startActivity(i);
}
});