无法解析Android中的符号setOnClickListener [英] cannot resolve symbol setOnClickListener in android
本文介绍了无法解析Android中的符号setOnClickListener的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
运行此程序时,它反复说无法解析符号setOnClickListener".任何人都可以帮助我解决此问题.
When i run this program, it repeatedly saying that "cannot resolve symbol setOnClickListener".anyone please help me to solve this problem.
import android.support.v7.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Set the content of the activity to use the activity_main.xml layout file
setContentView(R.layout.activity_main);
}
// Find the View that shows the numbers category
TextView numbers = (TextView) findViewById(R.id.numbers);
// Set a click listener on that View
numbers.setOnClickListener(new View.OnClickListener() {
// The code in this method will be executed when the numbers View is clicked on.
@Override
public void onClick(View view) {
Intent numbersIntent = new Intent(MainActivity.this, Numbers.class);
startActivity(numbersIntent);
}
}
}
推荐答案
您的代码应位于 onCreate
方法中,请尝试:
Your code should be inside the onCreate
method, try :
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Set the content of the activity to use the activity_main.xml layout file
setContentView(R.layout.activity_main);
// Find the View that shows the numbers category
TextView numbers = (TextView) findViewById(R.id.numbers);
// Set a click listener on that View
numbers.setOnClickListener(new View.OnClickListener() {
// The code in this method will be executed when the numbers View is clicked on.
@Override
public void onClick(View view) {
Intent numbersIntent = new Intent(MainActivity.this, Numbers.class);
startActivity(numbersIntent);
}
}
}
详细了解活动及其生命周期:活动生命周期
Read more about Activities and their lifecycle : Activity Lifecycle
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