Question

我在Android Studio 2.0中遇到错误“类型ID错误的预期资源”。代码实际上非常简单。我试图学习意图但在setContentView方法中有错误。你能检查一下吗？

//代码从这里开始

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);

    }

}

//我们的MainActivity xml在这里

 //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

setContentView方法不需要findViewById（）方法

>>> with open(filename,'rb') as f:
...     buff = f.read() # it reads the whole file into memory
...
>>> buff
b'\xaa\xcd\xff\x0f'
>>> out_hex = ['{:02X}'.format(b) for b in buff]
>>> out_hex
['AA', 'CD', 'FF', '0F']

将其更改为

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

类型ID错误的预期资源 - Android

1 个答案: