Android与kotlin报错3

素颜马尾好姑娘i 2024-04-08 13:33 72阅读 0赞

## 前言 ##

记录我遇到的kotlin与android的问题  
第一篇[Android与kotlin报错][Android_kotlin]  
第二篇[Android与kotlin报错2][Android_kotlin_2]

## 一百零一 ##

### 错误信息 ###

Textview显示STRING\_TOO\_LARGE

### 解决办法 ###

减少TextView的文本内容  
TextView最多能够显示10822个字符  
![在这里插入图片描述][1732fe040baf417f99d3289470a3d81e.png]

### 总结 ###

Textview中\\n\\n是空一行，\\n是换行  
文本最好用`"文本内容"`来表示，添加冒号表示文本

## 一百零二 ##

### 错误信息 ###

使用TextInputLayout时会出现两条下横线的情况  
![在这里插入图片描述][2181947424db41ff8a5ac83723bb288f.png]

### 解决办法 ###

更改主题的样式为Theme.AppCompat.Light.NoActionBar或Theme.AppCompat.DayNight  
![在这里插入图片描述][bfc7a5712ed74ccab18c7a092635916a.png]  
![在这里插入图片描述][8df2a97ddd38438dad0f29173b18c457.png]  
![在这里插入图片描述][e02be0a8e7704f20ad09ab3ec866dbc9.png]  
![在这里插入图片描述][3de5901a22be4c2592375d6ea152341f.png]

## 一百零三 ##

### 报错信息 ###

ConstraintLayout嵌套SwipeRefreshLayout嵌套ScrollView嵌套Recyclerview时，使用宫格布局(StaggeredGridLayoutManager),不能正常显示  
![在这里插入图片描述][87852f4a75214090b74084347c2988a9.png]  
![在这里插入图片描述][39084bf2e21048348726db661b710653.png]

### 解决办法 ###

将布局的嵌套的ScrollView去掉，recyclerview自带滚动视图

<?xml version="1.0" encoding="utf-8"?>
    <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/RecyclerViewBackgroundColor"
        android:orientation="vertical"
        tools:context=".MainActivity">
    
        
        <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
            android:id="@+id/srl_simple"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
    
            
         
    
        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/RecyclerView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
        </androidx.recyclerview.widget.RecyclerView>
    
           
        </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
    </androidx.constraintlayout.widget.ConstraintLayout>

## 一百零四 ##

### 报错信息 ###

java.lang.ClassCastException: cn.leancloud.LCObject cannot be cast to com.example.secondhandtest.Goods  
at com.example.secondhandtest.GoodsAdapter.onBindViewHolder(GoodsAdapter.kt:37)  
at com.example.secondhandtest.GoodsAdapter.onBindViewHolder(GoodsAdapter.kt:19)

### 解决办法 ###

严格按照leancloud的文档进行查询和添加，注意泛型一定是`<LCObject>`或者`<LCUser>`  
![在这里插入图片描述][838c0c4f1e5149e1b5de3fcf192f7584.jpeg]  
这样构建对象  
代码如下

ReleaseGoodsTitle=binding.etReleaseGoodsname.text.toString()
                ReleaseGoodsMessage=binding.etReleaseGoodsmessage.text.toString()
                ReleaseGoodsMoney= Integer.valueOf(binding.etReleaseGoodsmoney.text.toString())
                val currentUser:LCUser= LCUser.getCurrentUser()
                val goods= Goods()
                val goodsAdd:LCObject= LCObject("Goods")
                goodsAdd.put("GoodsTitle",ReleaseGoodsTitle)
                goodsAdd.put("GoodsMessage",ReleaseGoodsMessage)
                goodsAdd.put("GoodsMoney",ReleaseGoodsMoney)
                goodsAdd.put("GoodsUser",currentUser)

————————————————————————————————————————————  
![在这里插入图片描述][a09700d19efa4ffd8e94f9a88ccc5c7b.png]  
这样获取数据  
代码如下

val goods: LCObject? =goodsList?.get(position)
            Log.e(TAG, "GoodsAdapter获取对应的数据", )
    holder.GoodsName.text=goods?.getString("GoodsTitle")
            Log.e(TAG, "GoodsAdapter列表赋值GoodsName", )
            holder.GoodsMonehy.text= goods?.getString("GoodMoney")
            holder.GoodsMessage.text=goods?.getString("GoodsMessage")
            val user= LCUser.getCurrentUser()
            Log.e(TAG, "GoodsAdapter获取当前的用户", )
            holder.GoodsUser.text=user.username

取数据也能通过objectId进行获取

## 一百零五 ##

### 报错信息 ###

leancloud注册失败，提示cn.leancloud.LCException: Username is missing or empty.

### 解决办法 ###

注册的时候按照文档的要求来  
![在这里插入图片描述][255ddbfe7fa74587a3875c12208fc73f.png]

错误示范  
不要通过自己的实体类进行注册  
val user= User(et\_username.text.toString(),et\_password.text.toString(),0)  
即便是自己的user实体类继承了LCUser

data class User(@SerializedName("UserName")
    var UserName:String,
               @SerializedName("UserPassWord")
               var UserPassWord:String,
               @SerializedName("UserMoney")
               var UserMoney:Int
               ):LCUser()

正确代码

val user:LCUser= LCUser()
     user.username = et_username.text.toString()
                user.setPassword(et_password.text.toString())
    //            user.username = et_username.text.toString()
    //            user.setPassword(et_password.text.toString())
        user.signUpInBackground().subscribe(object:Observer<LCUser>{
        
            override fun onSubscribe(d: Disposable) {
        
    
            }
    
            override fun onNext(t: LCUser) {
        
                Toast.makeText(this@RegisterUserActivity, "注册成功", Toast.LENGTH_SHORT).show()
            }
    
            override fun onError(e: Throwable) {
        
                Toast.makeText(this@RegisterUserActivity, "注册失败", Toast.LENGTH_SHORT).show()
                Log.e(TAG, "注册失败"+e)
            }
    
            override fun onComplete() {
        
    
            }
    
        })

## 一百零六 ##

### 报错信息 ###

支付宝沙盒传入参数类型报错  
传入参数是int类型，传入数据是string类型，将string转int类型，报错  
java.lang.NumberFormatException: For input string: “250.0”

### 解决办法 ###

更改传入参数是double类型，传入数据String转double类型

public static Map<String, String> buildOrderParamMap(String app_id, boolean rsa2,double PayMoney,String PayMessage) {
        }

![在这里插入图片描述][010c155b7b084bd49a3f819ed8842c13.png]

double str  = Double.parseDouble(ExploreDetailedGoodsMoney.getText().toString());
    Map<String, String> params = OrderInfoUtil2_0.buildOrderParamMap(APPID,rsa2,str,ExploreDetailedGoodsMessage.getText().toString());

![在这里插入图片描述][0d0c72ce0c4f40e5a7401a5974247d5d.png]

## 一百零七 ##

### 报错信息 ###

unable to connect to 127.0.0.1:5555:5555

### 解决办法 ###

确定雷电模拟器有开启开发者模式和启用usb调试，就将雷电模拟器和AndroidStudio彻底关闭，然后再开启，就自动连接上去了

[Android_kotlin]: https://blog.csdn.net/u013074761/article/details/106311401
[Android_kotlin_2]: https://blog.csdn.net/u013074761/article/details/121563865?spm=1001.2014.3001.5501
[1732fe040baf417f99d3289470a3d81e.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/44d034c7f13843f6b82ef93675a4d557.png
[2181947424db41ff8a5ac83723bb288f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/67e5ace839e3402a93d48d955c0b3640.png
[bfc7a5712ed74ccab18c7a092635916a.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/384520a63c144bbdb827d43311387ffc.png
[8df2a97ddd38438dad0f29173b18c457.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/f4b35315c78c4b39bae7e33612260232.png
[e02be0a8e7704f20ad09ab3ec866dbc9.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/00a8b1941f23454dba4b0ec59f0fcf41.png
[3de5901a22be4c2592375d6ea152341f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/534c2ee10d9149d3a8ddffa1fbe59d2b.png
[87852f4a75214090b74084347c2988a9.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/75903fb1a2754627b0aebb37a90a0083.png
[39084bf2e21048348726db661b710653.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/51f688a09f5b4320b4c1a1624def346d.png
[838c0c4f1e5149e1b5de3fcf192f7584.jpeg]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/ba96264bf5704d8cbe8aa301932b55fd.jpeg
[a09700d19efa4ffd8e94f9a88ccc5c7b.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/e23a64c2ead1439aa9ef1fef4257986e.png
[255ddbfe7fa74587a3875c12208fc73f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/09d0c7c50dd94737ad8739d07f61d718.png
[010c155b7b084bd49a3f819ed8842c13.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/729b6acc377047eb9771156ccd3daac8.png
[0d0c72ce0c4f40e5a7401a5974247d5d.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/08/e990019ab2e941209fdc9e69f098973c.png