(未解决)Android FragmentActivity 错误
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【中文标题】(未解决)Android FragmentActivity 错误【英文标题】:(Unsolvd) Android FragmentActivity error 【发布时间】:2016-05-22 03:59:09 【问题描述】:早上好,
在 Eclipse 中设置我的 android 依赖项时,我遇到了很多问题。
自从修复了原始错误(依赖项)后,我现在遇到了一些新错误,这些错误似乎由于之前的 XML 和 targetSDK 错误而没有发生,但还有其他问题。
我想创建一个简单的应用程序,但它需要我使用 google maps api,而且从本周开始以来,我基本上一直在努力正确设置依赖项。
我已经完成了所有工作,包括重新安装 ADT、SDK、附加功能等等 - 但无济于事。我已经按照 google's dev 上关于 android 环境的教程进行操作。
当前错误:
Description Resource Path Location Type
FragmentActivity cannot be resolved to a type Startup.java /birdview/src/com/example/birdview line 14 Java Problem
FragmentActivity cannot be resolved to a type Startup.java /birdview/src/com/example/birdview line 19 Java Problem
FragmentActivity cannot be resolved to a type Startup.java /birdview/src/com/example/birdview line 42 Java Problem
The method getFragmentManager() is undefined for the type Startup Startup.java /birdview/src/com/example/birdview line 22 Java Problem
The method getMenuInflater() is undefined for the type Startup Startup.java /birdview/src/com/example/birdview line 29 Java Problem
The method onCreate(Bundle) of type Startup must override or implement a supertype method Startup.java /birdview/src/com/example/birdview line 18 Java Problem
The method onCreateOptionsMenu(Menu) of type Startup must override or implement a supertype method Startup.java /birdview/src/com/example/birdview line 27 Java Problem
The method onOptionsItemSelected(MenuItem) of type Startup must override or implement a supertype method Startup.java /birdview/src/com/example/birdview line 34 Java Problem
The method setContentView(int) is undefined for the type Startup Startup.java /birdview/src/com/example/birdview line 20 Java Problem
Unable to resolve target 'android-19' until the SDK is loaded. hello Unknown Android Target Problem
Unable to resolve target 'android-21' until the SDK is loaded. birdview Unknown Android Target Problem
Unable to resolve target 'android-21' until the SDK is loaded. google-play-services_lib Unknown Android Target Problem
自从更改 targetSDK 后,依赖错误现已消失,但上述错误已取而代之。
我已尝试删除该项目,然后重新添加它。还尝试重新安装这些工具,以防它们惹恼我。
我不确定你们还需要什么代码等来帮助我,所以请继续告诉我是否需要更多 sn-ps。
我们将不胜感激有关此问题的任何帮助。
最好的问候, 乔金
编辑(Gradle 文件):
apply plugin: 'com.android.application'
dependencies
compile fileTree(dir: 'libs', include: '*.jar')
compile project(':google-play-services_lib')
android
compileSdkVersion 21
buildToolsVersion "23.0.2"
sourceSets
main
manifest.srcFile 'AndroidManifest.xml'
java.srcDirs = ['src']
resources.srcDirs = ['src']
aidl.srcDirs = ['src']
renderscript.srcDirs = ['src']
res.srcDirs = ['res']
assets.srcDirs = ['assets']
// Move the tests to tests/java, tests/res, etc...
instrumentTest.setRoot('tests')
// Move the build types to build-types/<type>
// For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
// This moves them out of them default location under src/<type>/... which would
// conflict with src/ being used by the main source set.
// Adding new build types or product flavors should be accompanied
// by a similar customization.
debug.setRoot('build-types/debug')
release.setRoot('build-types/release')
编辑:
package com.example.birdview;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
public class Startup extends FragmentActivity
implements OnMapReadyCallback
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_startup);
if (savedInstanceState == null)
getFragmentManager().beginTransaction().add(R.id.container, new PlaceholderFragment()).commit();
@Override
public boolean onCreateOptionsMenu(Menu menu)
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.startup, menu);
return true;
@Override
public boolean onOptionsItemSelected(MenuItem item)
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings)
return true;
return super.onOptionsItemSelected(item);
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment
public PlaceholderFragment()
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
View rootView = inflater.inflate(R.layout.fragment_startup, container, false);
return rootView;
@Override
public void onMapReady(GoogleMap googleMap)
// TODO Auto-generated method stub
编辑:仍然需要帮助。
【问题讨论】:
发布你的 gradle 文件 查看编辑。谢谢! 【参考方案1】:因为你的compiledSdkVersion
。您应该将其设置为 21 或更高,因为在 API 级别 21 中引入了@android:style/Theme.Material.Light.DialogWhenLarge.NoActionBar
。请参阅here。
【讨论】:
这确实解决了依赖问题。但是现在我面临各种其他错误,例如:“FragmentActivity 无法解析为类型”。有关更多信息,请参阅我对 Startup(仅限活动)的编辑。 你可能想看看这个SO-164886。【参考方案2】:添加最新的支持和设计依赖并重建您的项目
compile 'com.android.support:design:23.1.1'
compile 'com.android.support:appcompat-v7:23.1.1'
【讨论】:
尝试将它添加到依赖项中并重建项目,(清理..,构建)但它没有做任何事情...... 有什么线索吗?以上是关于(未解决)Android FragmentActivity 错误的主要内容,如果未能解决你的问题,请参考以下文章
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