异常

Android

系统

待解问题

• Caused by: android.util.AndroidRuntimeException: android.webkit.WebViewFactory$MissingWebViewPackageException: Failed to load WebView provider: No WebView installed

• java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 5(offset:5).stat(RecycleView内部bug)其它两个解决方案

通知栏

• Java.lang.IllegalArgumentException: Invalid notification (no valid small icon)

• android 5.0以上通知栏、状态栏图标变成白色

• Android通知栏微技巧，那些你所没关注过的小细节

Context

• android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@4479b390 is not valid; is your activity running?

Theme

• java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.

ListView

• java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. Make sure your adapter calls notifyDataSetChanged() when its content changes.

  错误案例举例 错误案例分析

• 关于Adapter的The content of the adapter has changed问题分析

Broadcast

• Java.lang.IllegalArgumentException: Receiver not registered
• java.lang.RuntimeException: Error receiving broadcast Intent { act=android.net.conn.CONNECTIVITY_CHANGE flg=0x4000010 (has extras) } in org.jivesoftware.smack.SmackAndroid$1@38e247f

APP安装

• INSTALL_FAILED_CONFLICTING_PROVIDER|【2017-03-29】provider组件 android:authorities 重名问题，引用第三方库不修改android:authorities属性的值
• Failure [INSTALL_FAILED_UID_CHANGED]

SO文件

• Android6.0出现「java.lang.UnsatisfiedLinkError .so has text relocations」的解决办法|【2017-03-29】这个（xx.so）文件使用了较低版本的SDK
• Cannot load WebView: java.lang.UnsatisfiedLinkError, library is 64-bit instead of 32-bit

生命周期

• Android.SuperNotCalledException报错异常信息的解决方案

  由于没有销毁fragment，导致activity没法销毁

View

• android setTag (int key, Object tag)抛出IllegalArgumentException的问题
• Attempt to read from field ‘int android.view.View.mViewFlags’ on a null object reference|java.lang.NullPointerException: Attempt to read from field ‘int android.view.View.mViewFlags’ on a null object reference

Gradle

• Error:Configuration with name 'default' not found|检查gradle配置文件是否缺失？

数据库

• Android SQLite数据库SQLiteDatabaseLockedException异常分析及处理|因为我们只使用一个数据库连接，Thread1和Thread2的都是由getDatabase()方法返回的相同连接。发生的什么事呢，在Thread2还在使用数据库连接时，Thread1可能已经把它给关闭了，那就是为什么你会得到崩溃异常。

  我们需要确保在没有任何一个人在使用数据库时，才去关闭它。在StackOverflow上推荐的做法是永远不要关闭数据库。Android会尊重你这种做法，但会给你如下的提示。所以我一点也不推荐这种做法。

• attempt to re-open an already-closed object |每次都创建了一个新的SQLiteOpenHelper，实际上你每次都创建了一个数据库的连接。如果你在同一时间用不同的数据库连接来对同一的数据库进行写操作的话，那么其中一个会失败。
• android.database.CursorWindowAllocationException: Cursor window allocation of 2048 kb failed

网络异常

• libcore.io.ErrnoException: connect failed: ECONNREFUSED (Connection refused)|
• javax.net.ssl.SSLPeerUnverifiedException: No peer certificate|SSL访问支持---每种网络库都会遇到

Rxjava

• java.lang.IllegalStateException: Fatal Exception thrown on Scheduler.Worker thread.

内存问题

• java.lang.OutOfMemoryError: pthread_create (1040KB stack) failed: Try again

开源库

OrmLite

• OrmLite
• Could not allocate CursorWindow
• SQLite Android Database Cursor window allocation of 2048 kb failed
• ORMLite 获取 Cursor

Java

IO专题

• java.io.File.fixSlash

//Android系统中使用 new File(null)  参数路径传递为null
String path=null;
File file=new File(path);

java.lang.NullPointerException
at java.io.File.fixSlashes(File.java:185)                             
at java.io.File.<init>(File.java:134)

String

• Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference|equals方法判空问题

转义问题

• StringEscapeUtils commons-lang

    反转义：
    StringEscapeUtils.unescapeJava(mapBuilder.toString())
    转义：
    StringEscapeUtils.escapeJava(mapBuilder.toString())

HasMap

• Java ConcurrentModificationException 异常分析与解决方案
• java.util.ConcurrentModificationException 解决办法

Git

• fatal: refusing to merge unrelated histories|git无法pull仓库refusing to merge unrelated histories

Android studio

• Manifest merger failed with multiple errors, see logs

  一般是主工程与子工程之间清单文件的冲突，最小版本不一致的问题

• The version of Gradle you are using (2.10) does not support the forTasks() method on BuildActionExecuter. Support for this is available in Gradle 3.5 and all later versions.|更新高版本的Android studio之后运行项目发生错误

  
• Error:Unable to load class 'org.gradle.logging.StyledTextOutput'. Possible causes for this unexpected error include:
• No service of type Factory available in ProjectScopeServices.
• Error: Expected resource of type raw这样错误只需要加上

  @SuppressWarnings("ResourceType")