Butterknife @generate not working{Error:(23, 6) er

build.grable(root)app

apply plugin: 'com.android.library'

android {
compileSdkVersion 25
buildToolsVersion '25.0.0'
defaultConfig {
    minSdkVersion 18
    targetSdkVersion 23
    multiDexEnabled true
    versionCode 1
    versionName "1.0"

    testInstrumentationRunner    "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'),          'proguard-rules.pro'
    }
}
productFlavors {
}
dexOptions {
    incremental true
    javaMaxHeapSize '2g'
    jumboMode = true
    preDexLibraries =true
}
compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_7
    targetCompatibility JavaVersion.VERSION_1_7
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:25.3.0'
compile 'com.android.support:design:25.3.0'
compile 'com.jakewharton:butterknife:8.5.1'
compile 'com.android.support:multidex:1.0.1'
compile 'com.android.support:support-v4:25.3.0'
compile 'com.android.support:support-annotations:25.3.0'
androidTestCompile 'com.android.support:support-annotations:25.3.0'
androidTestCompile 'com.android.support.test:runner:0.5'
androidTestCompile 'com.android.support.test:rules:0.5'
androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
}

build.gradle

package com.pocketfeeds.app1;

import android.app.ProgressDialog;
import android.content.res.Configuration;
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;
}
}

Make sure you have latest Butterknife lib on your classpath
Right click on usage of desired layout reference (e.g. R.layout.main in your Activity or Fragment), then Generate and Generate ButterKnife Injections
Pick injections you want, you also have an option to create ViewHolder for adapters.
Click Confirm and enjoy injections in your code with no work!
"confirm" it is not working cant injection any code

Error:Execution failed for task':app1:compileReleaseJavaWithJavac'.Compilation failed;see the compiler error output for details.'

回答1:

Add below entries in gradle file

compile 'com.jakewharton:butterknife:8.5.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'

@BindView is the key which is used to bind views.

回答2:

To confirm what Tim mentioned in the comments above, you need to add the following to the dependencies section of your build.gradle:

annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'

While you have the ButterKnife libraries enabled, the Java compiler is unable to process the @Bind annotations because the ButterKnife Annotation Processor has not been enabled. This annotation processor expands ButterKnife-specific statements into a format that Android can natively understand.

Also make sure that you have the jcenter and mavenCentral repositories enabled in your build.gradle:

repositories {
    mavenCentral()
    jcenter()
}

EDIT I'm an idiot. Thanks to Sourav Ganguly for pointing out that @BindView needs to be used, not @Bind. I've spent way too much time in Dagger recently...

EDIT 2: Regarding your Constant expression error, you also need to include your R file: