Question

我的项目运行良好（备份项目仍然没有产生此错误）但是当我为 Conact_Us 页面添加布局时，它产生了此错误。（联系我们活动不会抛出任何错误）以下是我的Gradle构建消息

信息：Gradle任务[：app：assembleDebug] 观察到的套餐ID＆＃39;附加组件; addon-google_apis-google-23＆＃39;在不一致的位置＆＃39; C：\ Users \ DELL \ AppData \ Local \ Android \ Sdk \ add-ons \ addon-google_apis-google-23-1＆＃39; （预期＆＃39; C：\ Users \ DELL \ AppData \ Local \ Android \ Sdk \ add-ons \ addon-google_apis-google-23＆＃39;）已经观察到包ID＆＃39;附加组件; addon-google_apis-google-23＆＃39;在＆C; \ Users \ DELL \ AppData \ Local \ Android \ Sdk \ add-ons \ addon-google_apis-google-23＆＃39;中。在＆＃39; C：\ Users \ DELL \ AppData \ Local \ Android \ Sdk \ add-ons \ addon-google_apis-google-23-1＆＃39;中删除重复内容：app：preBuild UP-TO-DATE ：app：preDebugBuild UP-TO-DATE ：应用：checkDebugManifest ：app：preReleaseBuild UP-TO-DATE ：app：prepareComAndroidSupportAnimatedVectorDrawable2400Beta1Library UP-TO-DATE ：app：prepareComAndroidSupportAppcompatV72400Beta1Library UP-TO-DATE ：app：prepareComAndroidSupportDesign2400Beta1Library UP-TO-DATE ：app：prepareComAndroidSupportMediarouterV72300Library UP-TO-DATE ：app：prepareComAndroidSupportMultidex101Library UP-TO-DATE ：app：prepareComAndroidSupportRecyclerviewV72400Beta1Library UP-TO-DATE ：app：prepareComAndroidSupportSupportV42400Library UP-TO-DATE ：app：prepareComAndroidSupportSupportVectorDrawable2400Beta1Library UP-TO-DATE ：app：prepareComDaimajiaSliderLibrary115Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServices902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesAds902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesAdsLite902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesAnalytics902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesAnalyticsImpl902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesAppindexing902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesAppinvite902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesAuth902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesAuthBase902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesBase902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesBasement902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesCast902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesDrive902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesFitness902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesGames902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesGcm902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesIdentity902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesIid902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesLocation902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesMaps902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesNearby902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesPanorama902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesPlus902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesSafetynet902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesTagmanager902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesTagmanagerApi902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesTasks902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesVision902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesWallet902Library UP-TO-DATE ：app：prepareComGoogleAndroidGmsPlayServicesWearable902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseAnalytics902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseAnalyticsImpl902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseAuth902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseAuthCommon902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseAuthModule902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseCommon902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseConfig902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseCrash902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseDatabase902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseDatabaseConnection902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseIid902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseMessaging902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseStorage902Library UP-TO-DATE ：app：prepareComGoogleFirebaseFirebaseStorageCommon902Library UP-TO-DATE ：应用：prepareDebugDependencies ：app：compileDebugAidl UP-TO-DATE ：app：compileDebugRenderscript UP-TO-DATE ：app：generateDebugBuildConfig UP-TO-DATE ：app：mergeDebugShaders UP-TO-DATE ：app：compileDebugShaders UP-TO-DATE ：app：generateDebugAssets UP-TO-DATE ：app：mergeDebugAssets UP-TO-DATE ：app：generateDebugResValues UP-TO-DATE ：app：generateDebugResources UP-TO-DATE ：app：mergeDebugResources UP-TO-DATE ：app：processDebugManifest UP-TO-DATE ：app：processDebugResources UP-TO-DATE ：app：generateDebugSources UP-TO-DATE ：app：incrementalDebugJavaCompilationSafeguard UP-TO-DATE ：应用：compileDebugJavaWithJavac ：app：compileDebugJavaWithJavac - 不是增量的（例如输出已更改，之前没有执行等）。 E：\ Optasia \ Optasia2 \程序\ SRC \主\ java中的\ com \例子\ DELL \ optasia \ WelcomeActivity.java 错误：（81,18）错误：找不到符号方法addOnPageChangeListener（OnPageChangeListener）注意：某些输入文件使用或覆盖已弃用的API。注意：使用-Xlint重新编译：弃用以获取详细信息。：app：compileDebugJavaWithJavac FAILED 错误：任务＆＃39;：app：compileDebugJavaWithJavac＆＃39;执行失败。编译失败;请参阅编译器错误输出以获取详细信信息：建筑失败信息：总时间：9.781秒信息：2个错误信息：0警告信息：请参阅控制台中的完整输出

这是我的代码，其中发生了错误

    package com.example.dell.optasia;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.example.dell.optasia.MainActivity;
import com.example.dell.optasia.R;

public class WelcomeActivity extends AppCompatActivity {

    private ViewPager viewPager;
    private MyViewPagerAdapter myViewPagerAdapter;
    private LinearLayout dotsLayout;
    private TextView[] dots;
    private int[] layouts;
    private Button btnSkip, btnNext;
    private PrefManager prefManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Checking for first time launch - before calling setContentView()
    prefManager = new PrefManager(this);
    if (!prefManager.isFirstTimeLaunch()) {
        launchHomeScreen();
        finish();
    }

    // Making notification bar transparent
    if (Build.VERSION.SDK_INT >= 21) {
        getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
    }

    setContentView(R.layout.activity_welcome);

    viewPager = (ViewPager) findViewById(R.id.view_pager);
    dotsLayout = (LinearLayout) findViewById(R.id.layoutDots);
    btnSkip = (Button) findViewById(R.id.btn_skip);
    btnNext = (Button) findViewById(R.id.btn_next);


    // layouts of all welcome sliders
    // add few more layouts if you want
    layouts = new int[]{
            R.layout.welcome_slide1,
            R.layout.welcome_slide2,
            R.layout.welcome_slide3,
            R.layout.welcome_slide4};

    // adding bottom dots
    addBottomDots(0);

    // making notification bar transparent
    changeStatusBarColor();

    myViewPagerAdapter = new MyViewPagerAdapter();
    viewPager.setAdapter(myViewPagerAdapter);
    viewPager.addOnPageChangeListener(viewPagerPageChangeListener);

    btnSkip.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            launchHomeScreen();
        }
    });

    btnNext.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // checking for last page
            // if last page home screen will be launched
            int current = getItem(+1);
            if (current < layouts.length) {
                // move to next screen
                viewPager.setCurrentItem(current);
            } else {
                launchHomeScreen();
            }
        }
    });
}

private void addBottomDots(int currentPage) {
    dots = new TextView[layouts.length];

    int[] colorsActive = getResources().getIntArray(R.array.array_dot_active);
    int[] colorsInactive = getResources().getIntArray(R.array.array_dot_inactive);

    dotsLayout.removeAllViews();
    for (int i = 0; i < dots.length; i++) {
        dots[i] = new TextView(this);
        dots[i].setText(Html.fromHtml("&#8226;"));
        dots[i].setTextSize(35);
        dots[i].setTextColor(colorsInactive[currentPage]);
        dotsLayout.addView(dots[i]);
    }

    if (dots.length > 0)
        dots[currentPage].setTextColor(colorsActive[currentPage]);
}

private int getItem(int i) {
    return viewPager.getCurrentItem() + i;
}

private void launchHomeScreen() {
    prefManager.setFirstTimeLaunch(false);
    startActivity(new Intent(WelcomeActivity.this, HomeScreen.class));
    finish();
}

//  viewpager change listener
ViewPager.OnPageChangeListener viewPagerPageChangeListener = new ViewPager.OnPageChangeListener() {

    @Override
    public void onPageSelected(int position) {
        addBottomDots(position);

        // changing the next button text 'NEXT' / 'GOT IT'
        if (position == layouts.length - 1) {
            // last page. make button text to GOT IT
            btnNext.setText(getString(R.string.start));
            btnSkip.setVisibility(View.GONE);
        } else {
            // still pages are left
            btnNext.setText(getString(R.string.next));
            btnSkip.setVisibility(View.VISIBLE);
        }
    }

    @Override
    public void onPageScrolled(int arg0, float arg1, int arg2) {

    }

    @Override
    public void onPageScrollStateChanged(int arg0) {

    }
};

/**
 * Making notification bar transparent
 */
private void changeStatusBarColor() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        Window window = getWindow();
        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        window.setStatusBarColor(Color.TRANSPARENT);
    }
}

/**
 * View pager adapter
 */
public class MyViewPagerAdapter extends PagerAdapter {
    private LayoutInflater layoutInflater;

    public MyViewPagerAdapter() {
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View view = layoutInflater.inflate(layouts[position], container, false);
        container.addView(view);

        return view;
    }

    @Override
    public int getCount() {
        return layouts.length;
    }

    @Override
    public boolean isViewFromObject(View view, Object obj) {
        return view == obj;
    }


    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        View view = (View) object;
        container.removeView(view);
    }
}
}
error at  viewPager.addOnPageChangeListener(viewPagerPageChangeListener);

以下是我的Gradle Built

 apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "23.0.3"

    defaultConfig {
        applicationId "com.example.dell.optasia"
        minSdkVersion 15
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        multiDexEnabled true

    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.daimajia.slider:library:1.1.5@aar'
    androidTestCompile 'junit:junit:4.12'
    compile 'com.android.support:support-v4:24.0.0'
    compile 'com.android.support:appcompat-v7:24.0.0-beta1'
    compile 'com.google.android.gms:play-services:9.0.2'
    compile 'com.android.support:design:24.0.0-beta1'
    compile 'com.android.support:multidex:1.0.0'
    compile 'com.google.android.gms:play-services-ads:9.0.2'
    compile 'com.google.android.gms:play-services-auth:9.0.2'
    compile 'com.google.android.gms:play-services-gcm:9.0.2'
    compile files('E:/Optasia/Optasia2/libs/mail.jar')
    compile files('E:/Optasia/Optasia2/libs/android-support-v4.jar')
    compile files('E:/Optasia/Optasia2/libs/additionnal.jar')
    compile files('E:/Optasia/Optasia2/libs/activation.jar')

}

Answer 1

您添加了两个版本的支持库。删除jar版本，因为我怀疑它应该是没有addOnPageChangeListener

的旧版本

删除

compile files('E:/Optasia/Optasia2/libs/android-support-v4.jar')

Answer 2

我怀疑您在代码中没有定义onPageChangeListener方法的ViewPager类。

您需要使用此导入

android.support.v4.view.ViewPager

我还建议像这样清理你的依赖

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.daimajia.slider:library:1.1.5@aar'
    androidTestCompile 'junit:junit:4.12'

    compile 'com.android.support:design:24.0.0-beta1'
    compile 'com.android.support:multidex:1.0.0'
    compile 'com.google.android.gms:play-services-ads:9.0.2'
    compile 'com.google.android.gms:play-services-auth:9.0.2'
    compile 'com.google.android.gms:play-services-gcm:9.0.2'
}

然后，如果这些文件引用您的本地项目，请在此处删除v4 JAR

compile files('E:/Optasia/Optasia2/libs/mail.jar')
compile files('E:/Optasia/Optasia2/libs/android-support-v4.jar')
compile files('E:/Optasia/Optasia2/libs/additionnal.jar')
compile files('E:/Optasia/Optasia2/libs/activation.jar')

如果你的jar文件在libs目录中，那么这些行是不必要的，因为这行编译了libs中的所有jar文件。

compile fileTree(include: ['*.jar'], dir: 'libs')

编译错误：错误：（81,18）错误：找不到符号方法addOnPageChangeListener（OnPageChangeListener）

2 个答案: