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buildTypes {
  debug {
    buildConfigField “String”, “BASE_URL”, “\”http://api-staging.com/\""
  }
  release {
    buildConfigField “String”, “BASE_URL”, “\”https://api.com/\""
    debuggable false
    proguardFiles getDefaultProguardFile(‘proguard-android.txt’), ‘proguard-rules.pro’
    signingConfig signingConfigs.config
  }

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public static final String BASE_URL = BuildConfig.BASE_URL;

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android {
  buildTypes {
    release {
      debuggable false
      shrinkResources true
      proguardFiles getDefaultProguardFile(‘proguard-android.txt’), ‘proguard-rules.pro’
      signingConfig signingConfigs.config
    }
  }
}

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dependencies {
  releaseCompile ‘com.google.firebase:firebase-crash:9.6.1’
}

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class ExampleActivity extends Activity {
  @State int mSelectedPosition; // This will be automatically saved and restored

  @Override public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Icepick.restoreInstanceState(this, savedInstanceState);
  }

  @Override public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);

julianfalcionelli

class ExampleActivity extends Activity {
    @BindView(R.id.title) TextView mTitleTextView;

    @Override public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.example_activity);
        ButterKnife.bind(this);
        
        mTitleTextView.setText("Hello World");
    }

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class ExampleActivity extends Activity {
    private ActivityExampleBinding mBinding;

    @Override public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mBinding = DataBindingUtil.setContentView(this, R.layout.example_activity);
        
        mBinding.title.setText("Hello World");
    }
}

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 <!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="android:layout_width">wrap_content</item>
    <item name="android:layout_height">wrap_content</item>
</style>

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<application
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme">
    
    ...
    
</application>

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package com.dummyapp;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import java.util.List;