OnClickListener在Android的工作室 [英] OnClickListener in Android Studio
问题描述
我试图开发和应用程序中使用全新的Android工作室,但我一直对我的OnClickListeners接收沾边。主要是它告诉我,它不能解析符号setOnClickListener,它也不能解析视图V
包com.sigmachi.derbydays;
进口android.app.Activity;
进口android.content.Intent;
进口android.os.Bundle;
进口android.view.Menu;
进口android.view.View;
进口android.view.View.OnClickListener;
进口android.widget.Button;
公共类MainActivity延伸活动{
@覆盖
保护无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main);
}
@覆盖
公共布尔onCreateOptionsMenu(功能菜单){
//充气菜单;这增加了项目操作栏,如果它是present。
。getMenuInflater()膨胀(R.menu.main,菜单);
返回true;
}
Button按钮=(按钮)findViewById(R.id.standingsButton);
button.setOnClickListener(新View.OnClickListener(){
公共无效的onClick(视图v){
startActivity(新意图(MainActivity.this,StandingsActivity.class));
}
});
这是code类中的
信息:编制完成,11错误和0警告4秒
信息:11错误
信息:0警告
/Users/angelo/AndroidStudioProjects/SigmaChiDerbyDaysProject/SigmaChiDerbyDays/src/main/java/com/sigmachi/derbydays/MainActivity.java
错误:错误:行(28)摇篮:其中,标识和GT;预期
错误:错误:行(28)摇篮:非法启动类型
错误:错误:行(28)摇篮:')'预期
错误:错误:行(28)摇篮:';'预期
错误:错误:行(28)摇篮:无效的方法声明;所需的返回类型
错误:错误:行(30)摇篮:非法启动类型
错误:错误:行(30)摇篮:';'预期
错误:错误:行(30)摇篮:')'预期
错误:错误:行(30)摇篮:没个说法
错误:错误:行(30)摇篮:';'预期
错误:错误:行(33)摇篮:非法启动类型
这些都是我收到这使得完全没有意义的错误。 28号线在开始的时候我做的 button.setOnClickListener
编辑:现在,我收到了强制关闭的时候我preSS按钮
这是类应该打开,裸类唯一的改变是布局打开
包com.sigmachi.derbydays;
进口android.os.Bundle;
进口android.app.Activity;
进口android.view.Menu;
公共类StandingsActivity延伸活动{
@覆盖
保护无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.standings_layout);
}
@覆盖
公共布尔onCreateOptionsMenu(功能菜单){
//充气菜单;这增加了项目操作栏,如果它是present。
。getMenuInflater()膨胀(R.menu.main,菜单);
返回true;
}
}
按钮按钮=(按钮)findViewById(R.id.standingsButton);
button.setOnClickListener(新View.OnClickListener(){
公共无效的onClick(视图v){
startActivity(新意图(MainActivity.this,StandingsActivity.class));
}
});
这code是不以任何方式。如果你想使用它,它必须像的OnCreate方法中的()
保护无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main);
Button按钮=(按钮)findViewById(R.id.standingsButton);
button.setOnClickListener(新View.OnClickListener(){
公共无效的onClick(视图v){
startActivity(新意图(MainActivity.this,StandingsActivity.class));
}
});
}
(遗憾的压痕)
I'm attempting to develop and app using the new Android Studio, but I keep receiving major errors on my OnClickListeners. Mainly it is telling me that it cannot resolve symbol "setOnClickListener" and it also cannot resolve "View v"
package com.sigmachi.derbydays;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
Button button= (Button) findViewById(R.id.standingsButton);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
startActivity(new Intent(MainActivity.this,StandingsActivity.class));
}
});
That is the code in the class
Information:Compilation completed with 11 errors and 0 warnings in 4 sec
Information:11 errors
Information:0 warnings
/Users/angelo/AndroidStudioProjects/SigmaChiDerbyDaysProject/SigmaChiDerbyDays/src/main/java/com/sigmachi/derbydays/MainActivity.java
Error:Error:line (28)Gradle: <identifier> expected
Error:Error:line (28)Gradle: illegal start of type
Error:Error:line (28)Gradle: ')' expected
Error:Error:line (28)Gradle: ';' expected
Error:Error:line (28)Gradle: invalid method declaration; return type required
Error:Error:line (30)Gradle: illegal start of type
Error:Error:line (30)Gradle: ';' expected
Error:Error:line (30)Gradle: ')' expected
Error:Error:line (30)Gradle: not a statement
Error:Error:line (30)Gradle: ';' expected
Error:Error:line (33)Gradle: illegal start of type
Those are the errors I am receiving which makes absolutely no sense. Line 28 starts at when I do button.setOnClickListener
EDIT: Now I receive a force close when I press the button
This is the class it should open, a bare class with the only change being the layout to open
package com.sigmachi.derbydays;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class StandingsActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.standings_layout);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Button button= (Button) findViewById(R.id.standingsButton);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
startActivity(new Intent(MainActivity.this,StandingsActivity.class));
}
});
This code is not in any method. If you want to use it, it must be within a method like OnCreate()
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button= (Button) findViewById(R.id.standingsButton);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
startActivity(new Intent(MainActivity.this,StandingsActivity.class));
}
});
}
(sorry for the indentation)
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