Question

当我尝试构建我的android项目时，我得到了这个错误

错误：（8,37）错误：包android.support.design.widget没有   存在错误：（18,9）错误：找不到符号类TabLayout   错误：（18,32）错误：找不到符号类TabLayout错误：（21，   33）错误：找不到符号变量TabLayout错误：（27,56）错误：   包TabLayout不存在错误：（48,36）错误：找不到   符号变量菜单错误：（28,57）错误：包TabLayout没有   存在错误：任务执行失败   '：应用程序：compileDebugJavaWithJavac'


编译失败;请参阅编译器错误输出以获取详细信错误：（55,23）错误：找不到符号变量action_settings

这是我的代码

package com.chaos.creativo;

import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.support.design.widget.TabLayout;

/**
 * Created by ahmed on 3/7/2016.
 */
public class Signin_up extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.signing_up);
        TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
        tabLayout.addTab(tabLayout.newTab().setText("SIGN IN"));
        tabLayout.addTab(tabLayout.newTab().setText("SIGN UP"));
        tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

        final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
        final PageAdapter adapter = new PageAdapter(getSupportFragmentManager(), tabLayout.getTabCount());

        viewPager.setAdapter(adapter);
        viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
        tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
                viewPager.setCurrentItem(tab.getPosition());
            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

我的build.gradle

> apply plugin: 'com.android.application'
> 
> android {
>     compileSdkVersion 23
>     buildToolsVersion "23.0.2"
> 
>     defaultConfig {
>         applicationId "com.chaos.creativo"
>         minSdkVersion 18
>         targetSdkVersion 23
>         versionCode 1
>         versionName "1.0"
>     }
>     buildTypes {
>         release {
>             minifyEnabled false
>             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
>         }
>     } }
> 
> dependencies {
>     compile fileTree(dir: 'libs', include: ['*.jar'])
>     testCompile 'junit:junit:4.12'
>     compile 'com.android.support:appcompat-v7:23.1.1'
>     compile 'com.google.android.gms:play-services-ads:8.4.0'
>     compile 'com.google.android.gms:play-services-identity:8.4.0'
>     compile 'com.firebase:firebase-client-android:2.3.1'
>     compile 'com.google.android.gms:play-services-gcm:8.4.0'
>     compile 'com.android.support:support-v4:23.2'
>     compile 'com.android.support:design:23.2' }

Answer 1

如果您正在使用android studio，请将以下内容放入gradle文件并重建。

 compile 'com.android.support:support-v4:23.2.1'
 compile 'com.android.support:design:23.2.1'

如果版本23.2.1不支持，请使用23.1.1

Answer 2

我通过添加以下内容解决了同样的错误：

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:24.2.1'
    compile 'com.android.support:support-v4:24.2.1'
    compile 'com.android.support:design:24.2.1'
}

Answer 3

对于API 25，这对我有用：

compile 'com.android.support:support-v4:25.2.0'
compile 'com.android.support:design:25.2.0'

Answer 4

在API 26上，这有效：

    compile 'com.android.support:support-v4:26.+'
    compile 'com.android.support:design:26.+'

Answer 5

如果您将支持库与不允许的 AndroidX 库混合使用。删除支持库，然后使用 AndroidX 。要正确迁移AndroidX，请执行以下步骤： 1 。选择重构->迁移到AndroidX ** 2 。按Do Refatcor **

Answer 6

替换

implementation 'com.android.support:support-v4:28.0.0'

使用

implementation 'androidx.legacy:legacy-support-v4:1.0.0'

在您的build.gradle中

错误包android.support.design.widget不存在

6 个答案: