Android问题集锦

Unknown attribute android:layout_width…

Gradle版本问题

->Sync project with gradle file

…up-to-date check…

可能时继承了某个接口，但又没有重写里面的所有方法

重写继承了的接口的所有方法即可

查看源码时显示Sources for ‘android api … platform’ not found

按照提示后下载完成仍然无法看源码

未配置源码路径

修改.AndroidStudio3.1\config\options目录下的jdk.table.xml文件

加上

1	<root url="file://F:/Soft/AndroidSDK/sources/android-28" type="simple" />

...
<sourcePath>
  <root type="composite">
    <root url="file://F:/Soft/AndroidSDK/sources/android-28" type="simple" />
  </root>
</sourcePath>
</roots>
<additional jdk="1.8" sdk="android-28" />
...

在AsyncTask中的doInBackground除非执行完毕否则无法进入onPostExecute

Calling this method guarantees that onPostExecute(Object) is never invoked.

调用此方法可确保永远不会调用onPostExecute

不要调用 cancle(true) 方法

Error:(11) No resource identifier found for attribute ‘roundIcon’ in package

删除AndroidManifest.xml里的 android:roundIcon=”@mipmap/ic_launcher_round”

OkHttp常见问题

.string不能用两次，否则报错，记得添加INTERNET权限

Installation failed with message Failed to finalize session

clean project 即可

java.lang.IllegalArgumentException: Service Intent must be explicit

在android 5.0版本以后，service intent必须为显式指出

Intent intent=new Intent("ADD");
//if dismiss will error
intent.setPackage("io.github.grooters.practicer.BindeRer");
bindService(intent,serviceConnection,BIND_AUTO_CREATE);

android.view.InflateException: Binary XML file line #7: Binary XML file line #7: Error inflating class

自定义控件需要重写以下构造方法：

1
2
3

public Viewer(Context context, @Nullable AttributeSet attrs) {
    super(context, attrs);
}

org.gradle.api.resources.ResourceException: Could not get resource

Unfortunately you can’t have non-Gradle Java modules and Android-Gradle modules in one project.

Sync project with gradle file

卸载后重新安装app提示签名不一致无法安装

未完全卸载app，只需要在应用商店的应用管理中的安装管理中卸载掉app

Error:Execution failed for task ‘:app:lintVitalRelease’

打包发布版apk时，你在错误或警告无法通过检测

只需要在app中的build.gradle中添加：

android{
    lintOptions {
        checkReleaseBuilds false
        abortOnError false
    }
}

App is not indexable by Google Search; consider adding at least one Activity with an ACTION-VIEW intent filter. See issue explanation for more details. less… (Ctrl+F1)
Adds URLs to get your app into the Google index, to get installs and traffic to your app from Google Search.

在AndroidManefist.xml中添加

1	<action android:name="android.intent.action.VIEW"/>

eg:

<activity android:name=".MainActivity" android:launchMode="standard">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <action android:name="android.intent.action.VIEW"/>
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

Could not find com.android.tools.build:aapt2:3.2.0-alpha14-4748712.
Searched in the following locations:

file:/D:/android_sdk/extras/m2repository/com/android/tools/build/aapt2/3.2.0-alpha14-4748712/aapt2-3.2.0-alpha14-4748712.pom

在project里的builde.gralde增加谷歌库

allprojects {
    repositories {
        google()//新增的
        jcenter()
    }
}