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我创建一个应用程序,其中有三个选项卡activity.In标签三我有一个TextView名登录的文字,只要在这个文本用户点击一个新的活动应该被打开,但应用程序当我们点击这个时崩溃。 我已经做了许多研究,以解决这个问题,但我无法在最后,我在这里为我的问题的解决,请帮忙解决。 在此先感谢。 这是我的loginActivity。应用上点击TextView的片段中崩溃
import android.app.ProgressDialog;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
public class loginActivity extends AppCompatActivity implements View.OnClickListener {
private EditText email_Id;
private EditText password;
private TextView sign_Up;
private Button sign_In;
private ProgressDialog progressDialog;
private FirebaseAuth firebaseAuth;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
firebaseAuth=FirebaseAuth.getInstance();
// if(firebaseAuth.getCurrentUser()!=null){
// directly start user profile activity
// finish();
// startActivity(new Intent(this,userProfileActivity.class));
//}
progressDialog=new ProgressDialog(this);
email_Id=(EditText)findViewById(R.id.email_id);
password=(EditText)findViewById(R.id.password);
sign_In=(Button)findViewById(R.id.sign_In);
sign_Up=(TextView)findViewById(R.id.sign_up);
sign_In.setOnClickListener(this);
sign_Up.setOnClickListener(this);
}
private void user_Login(){
String email=email_Id.getText().toString().trim();
String pass_word=password.getText().toString().trim();
if(TextUtils.isEmpty(email)){
// email is empty
Toast.makeText(this,"please enter email",Toast.LENGTH_SHORT).show();
return;// to stop the function from executation.
}
if(TextUtils.isEmpty(pass_word)){
// email is empty
Toast.makeText(this,"please enter password",Toast.LENGTH_SHORT).show();
return;
}
// here if everything ok the user will be register
progressDialog.setMessage("Registering User,please wait...");
progressDialog.show();
firebaseAuth.signInWithEmailAndPassword(email,pass_word)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
progressDialog.dismiss();
if (task.isSuccessful()){
// start user profile activity
finish();
startActivity(new Intent(getApplicationContext(),userProfileActivity.class));
}
}
});
}
@Override
public void onClick(View view) {
if (view==sign_In){
// start user profile activity
user_Login();
}
if(view==sign_Up){
// go to registeration page
finish();
startActivity(new Intent(this,FragmentThree.class));
}
}
}
您的问题后两张图片。但两张照片都是一样的。请更新它。问题出在loginActivity! –
我已更新并添加了我的登录活动。请帮助 –
请注释掉该行:sign_Up.setOnClickListener(本);和尝试,有无异常消失 –