I have the following problem when I run the 'app' (Android studio emulator):
Error:Execution failed for task ':app:javaPreCompileDebug'. > Annotation processors must be explicitly declared now. The following dependencies on the compile classpath are found to contain annotation processor. Please add them to the annotationProcessor configuration. - butterknife-7.0.1.jar (com.jakewharton:butterknife:7.0.1) Alternatively, set android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath = true to continue with previous behavior. Note that this option is deprecated and will be removed in the future. See https://developer.android.com/r/tools/annotation-processor-error-message.html for more details. My Graddle-App Level:
apply plugin: 'com.android.application' android { compileSdkVersion 25 buildToolsVersion '26.0.2' defaultConfig { applicationId "com.hhhhh.android" minSdkVersion 15 targetSdkVersion 25 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { implementation 'com.google.firebase:firebase-database:11.0.4' implementation 'com.google.firebase:firebase-auth:11.0.4' compile fileTree(include: ['*.jar'], dir: 'libs') compile 'com.android.support:appcompat-v7:25.2.0' compile 'com.android.support:design:25.0.1' compile 'com.jakewharton:butterknife:7.0.1' } apply plugin: 'com.google.gms.google-services' The error disappears when I switch to the version:
compile 'com.jakewharton:butterknife:8.7.0' But it generates more problems in my LogginActivity:
package com.sourcey.materiallogindemo; import android.app.ProgressDialog; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.content.Intent; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import butterknife.ButterKnife; import butterknife.Bind; public class LoginActivity extends AppCompatActivity { private static final String TAG = "LoginActivity"; private static final int REQUEST_SIGNUP = 0; @Bind(R.id.input_email) EditText _emailText; @Bind(R.id.input_password) EditText _passwordText; @Bind(R.id.btn_login) Button _loginButton; @Bind(R.id.link_signup) TextView _signupLink; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); ButterKnife.bind(this); _loginButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { login(); } }); _signupLink.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // Start the Signup activity Intent intent = new Intent(getApplicationContext(), SignupActivity.class); startActivityForResult(intent, REQUEST_SIGNUP); finish(); overridePendingTransition(R.anim.push_left_in, R.anim.push_left_out); } }); } public void login() { Log.d(TAG, "Login"); if (!validate()) { onLoginFailed(); return; } _loginButton.setEnabled(false); final ProgressDialog progressDialog = new ProgressDialog(LoginActivity.this, R.style.AppTheme_Dark_Dialog); progressDialog.setIndeterminate(true); progressDialog.setMessage("Authenticating..."); progressDialog.show(); String email = _emailText.getText().toString(); String password = _passwordText.getText().toString(); // TODO: Implement your own authentication logic here. new android.os.Handler().postDelayed( new Runnable() { public void run() { // On complete call either onLoginSuccess or onLoginFailed onLoginSuccess(); // onLoginFailed(); progressDialog.dismiss(); } }, 3000); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == REQUEST_SIGNUP) { if (resultCode == RESULT_OK) { // TODO: Implement successful signup logic here // By default we just finish the Activity and log them in automatically this.finish(); } } } @Override public void onBackPressed() { // Disable going back to the MainActivity moveTaskToBack(true); } public void onLoginSuccess() { _loginButton.setEnabled(true); finish(); } public void onLoginFailed() { Toast.makeText(getBaseContext(), "Login failed", Toast.LENGTH_LONG).show(); _loginButton.setEnabled(true); } public boolean validate() { boolean valid = true; String email = _emailText.getText().toString(); String password = _passwordText.getText().toString(); if (email.isEmpty() || !android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches()) { _emailText.setError("enter a valid email address"); valid = false; } else { _emailText.setError(null); } if (password.isEmpty() || password.length() < 4 || password.length() > 10) { _passwordText.setError("between 4 and 10 alphanumeric characters"); valid = false; } else { _passwordText.setError(null); } return valid; } } With 8.7.0:
