預期的類型id錯誤資源 - Android

Question

我在Android Studio 2.0中出現錯誤「預期的類型ID錯誤資源」。代碼實際上很簡單。我正在嘗試學習意圖，但在setContentView方法中出現錯誤。你能檢查一下嗎？

1. //代碼從這裏開始

   package com.example.oksijen02.sorunmuvar; 
   
   import android.app.Activity; 
   import android.content.Intent; 
   import android.os.Bundle; 
   import android.view.View; 
   import android.widget.EditText; 
   
   
   public class MainActivity extends Activity { 
   
   private static final int REQUEST_CODE=10; 
       @Override 
       protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        //following line getting error of "expected resource of type id.." 
        setContentView(findViewById(R.layout.activity_main)); 
   
       } 
   
       // here button action to define an intent and its extra value 
       public void onClick(View view){ 
        EditText text= (EditText) findViewById(R.id.inputforintent); 
        String value = text.getText().toString(); 
        //Define intent 
        Intent intent = new Intent(this,ResultActivity.class); 
        //add Edit Text value to send next activity via intent 
        intent.putExtra("senttext",value); 
   
       } 
   
   } 
   

2. //我們有MainActivity XML這裏

   //Edit Text in main activity 
   <EditText 
       android:id="@+id/inputforintent" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:minHeight="60dip" 
       android:text="FirstActivity" 
       android:textSize="20sp" 
       /> 
   
   //here we have button to pass other page which its code unwritten here 
   <Button 
       android:id="@+id/startIntent" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:layout_alignLeft="@+id/inputforintent" 
       android:layout_below="@+id/inputforintent" 
       android:onClick="onClick" 
       android:text="Calling an intent" 
       /> 
   

Answer 1

的setContentView方法不需要findViewById（）方法

setContentView(findViewById(R.layout.activity_main)); 

將其更改爲

setContentView(R.layout.activity_main);