發生原因

如果edittext 的鍵盤功能上是指向下一個，但是下一個edittext是隱藏的狀態就會引發crash

解決方法

在EditText属性里设置 android:imeOptions="actionUnspecified"

 或者使用"actionDone" 

showDialog requestFeature() must be called before adding content

java.lang.SecurityException: Permission Denial: opening provider android.support.v4.content.FileProvider from ProcessRecord ... that is not exported from....

這個是因為android7.0以上要shareFile權限問題，不能直接用File去接，要轉成Uri去使用

https://litotom.com/2017/04/15/android-studio-fabric-crashlytics/

https://get.fabric.io/

https://litotom.com/2017/01/19/fabric-google-acquires/

在ANDROID 中使用PICASSO，因為都作好處理了所以發生錯誤如果沒有去CALLBACK的話，就只是圖片顯示不出來而已=.=....

Picasso.Builder builder = new Picasso.Builder(this);
    builder.listener(new Picasso.Listener()
    {
        @Override
        public void onImageLoadFailed(Picasso picasso, Uri uri, Exception exception)
        {
            exception.printStackTrace();
        }
    });
    builder.build().load(URL).into(imageView);

If your targetSdkVersion is 24 or higher, we have to use FileProvider class to give access to the particular file or folder to make them accessible for other apps.

Windows无页面附加（Unable to add window.....is your activity running?）

@Override
protected void onDestroy() {    
if (mDialog != null && mDialog.isShowing()){        
mDialog.dismiss();        
mDialog = null;    
}    
super.onDestroy();
}

Android - 無法取得gcm id

GCMIntentService 要放在packge的最外層!!

自己抓crash全記錄