1、先來看異常:
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.util.Locale.equals(java.lang.Object)' on a null object reference
at android.app.ActivityThread.updateLocaleListFromAppContext(ActivityThread.java:5518)
at android.app.ActivityThread.handleConfigurationChanged(ActivityThread.java:5100)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2910)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1639)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:6662)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
2、簡要分析:
大概意思就是你設置了字體國際化的代碼,但是啓動時並沒有獲取到資源導致了空指針。
3、修改:
3.1、 先找代碼:
@Override
public Resources getResources() {
Resources resources = super.getResources();
Configuration configuration = resources.getConfiguration();
configuration.setToDefaults();
return resources;
}
這是一段設置app不隨着系統字體的調整而變化的代碼,大概位置在重寫的Application或者BaseActivity裏(找不到的直接全局搜,Ctrl + Shift + R)
如果沒搜到就不用往下看了!
3.2、找到了之後就替換爲下面的代碼
@Override
public Resources getResources() {
Resources resources = super.getResources();
Configuration configuration = resources.getConfiguration();
DisplayMetrics displayMetrics = resources.getDisplayMetrics();
if (null != resources && configuration.fontScale != 1) {
configuration.fontScale = 1;
if (Build.VERSION.SDK_INT >= 17) {
Context configurationContext = createConfigurationContext(configuration);
resources = configurationContext.getResources();
displayMetrics.scaledDensity = displayMetrics.density * configuration.fontScale;
} else {
resources.updateConfiguration(configuration, displayMetrics);
}
}
return resources;
}
4、吐個小槽:
用原來的代碼,測試時部分手機好用,部分手機無法啓動,異常信息展示定位不夠精準,多少被噁心了一小下。
共同學習! 共勉!