package com.haiii;import android.app.Activity;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;public class Helloworld3Activity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button b=(Button)findViewById(R.id.sumit);
OnClickListener l=new OnClickListener(){
public void onClick(DialogInterface dialog, int which) {
Button int1=(Button)findViewById(R.id.int1);
Button int2=(Button)findViewById(R.id.int2);
TextView result=(TextView)findViewById(R.id.result);
int a,b;
a=Integer.parseInt(int1.getText().toString());
b=Integer.parseInt(int2.getText().toString());
result.setText(String.valueOf(a+b));
// TODO Auto-generated method stub
}
};
b.setOnClickListener((android.view.View.OnClickListener) l);
}
}编译没有错误,运行时stop uxecpectedly求大神赐教啊
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;public class Helloworld3Activity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button b=(Button)findViewById(R.id.sumit);
OnClickListener l=new OnClickListener(){
public void onClick(DialogInterface dialog, int which) {
Button int1=(Button)findViewById(R.id.int1);
Button int2=(Button)findViewById(R.id.int2);
TextView result=(TextView)findViewById(R.id.result);
int a,b;
a=Integer.parseInt(int1.getText().toString());
b=Integer.parseInt(int2.getText().toString());
result.setText(String.valueOf(a+b));
// TODO Auto-generated method stub
}
};
b.setOnClickListener((android.view.View.OnClickListener) l);
}
}编译没有错误,运行时stop uxecpectedly求大神赐教啊
public void onClick(DialogInterface dialog, int which) {Button.OnClickListener l=new Button.OnClickListener(){
@Override
public void onClick(View v) {
我这样改后有这样报错
Button.OnClickListener l=new Button.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Button int1=(Button)findViewById(R.id.int1);
Button int2=(Button)findViewById(R.id.int2);
TextView result=(TextView)findViewById(R.id.result);
int a,b;
a=Integer.parseInt(int1.getText().toString());
b=Integer.parseInt(int2.getText().toString());
result.setText(String.valueOf(a+b));
}
};
b.setOnClickListener(l);
}
}
Button int2=(Button)findViewById(R.id.int2);
TextView result=(TextView)findViewById(R.id.result);
丢监听外面试试。
Button int2=(Button)findViewById(R.id.int2);
TextView result=(TextView)findViewById(R.id.result);
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class Helloworld3Activity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button b=(Button)findViewById(R.id.sumit);
Button.OnClickListener l=new Button.OnClickListener(){ @Override
public void onClick(View v) {
Button int1=(Button)findViewById(R.id.int1);
Button int2=(Button)findViewById(R.id.int2);
TextView result=(TextView)findViewById(R.id.result);
int a,b;
a=Integer.parseInt(int1.getText().toString());
b=Integer.parseInt(int2.getText().toString());
result.setText(String.valueOf(a+b));
// TODO Auto-generated method stub
}
};
b.setOnClickListener(l);
}
}改成这样还是不行
不是button的onclick监听~~~