import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.support.v4.app.NavUtils;
import android.text.Editable;
import android.text.Selection;@SuppressLint({ "ParserError", "ParserError" })
public class CountMainActivity extends Activity {
Button button0 ;
Button button1 ;
Button button2 ;
Button button3 ;
Button button4 ;
Button button5 ;
Button button6 ;
Button button7 ;
Button button8 ;
Button button9 ;
Button button10 ;
Button button11 ;
Button button12 ;
Button button13 ;
Button button14 ;
OnClickListener listener0 = null ;
OnClickListener listener1 = null ;
OnClickListener listener2 = null ;
OnClickListener listener3 = null ;
OnClickListener listener4 = null ;
OnClickListener listener5 = null ;
OnClickListener listener6 = null ;
OnClickListener listener7 = null ;
OnClickListener listener8 = null ;
OnClickListener listener9 = null ;
OnClickListener listener10 = null ;
OnClickListener listener11 = null ;
OnClickListener listener12 = null ;
OnClickListener listener13 = null ;
OnClickListener listener14 = null ;
//定义每个Button和对每个Button进行监听
EditText editText1;//定义一个变量用来接收buttonlistener传来的数据
private int editText1_value1;
private int editText1_value2;
private boolean bl = true;
private int result = 0;
private View vi ; @Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
listener0 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"7");
}
};
listener1 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"8");
}
};
listener2 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"9");
}
};
listener3 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"4");
}
};
listener4 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"5");
}
};
listener5 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"6");
}
};
listener13 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"0");
}
};
listener6 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"1");
}
};
listener7 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"2");
}
};
listener8 = new OnClickListener(){ @Override
public void onClick(View arg0) {
editText1.setText(editText1.getText().toString()+"3");
}
};
listener9 = new OnClickListener(){ @Override
public void onClick(View v) {
editText1_value1 = Integer.parseInt(editText1.getText().toString());
String s = "";
s = editText1.getText().toString();
editText1.setText(s);
editText1_value2 = Integer.parseInt(s);
result = editText1_value1 * editText1_value2 ;
}
};
listener14 = new OnClickListener(){ @Override
public void onClick(View v) {
// TODO Auto-generated method stub
editText1.setText(result);
}
};
setContentView(R.layout.activity_count_main);
button0 = (Button) findViewById(R.id.button1);
button0.setOnClickListener(listener0);
button1 = (Button) findViewById(R.id.button2);
button1.setOnClickListener(listener1);
button2 = (Button) findViewById(R.id.button3);
button2.setOnClickListener(listener2);
button3 = (Button) findViewById(R.id.button4);
button3.setOnClickListener(listener3);
button4 = (Button) findViewById(R.id.button5);
button4.setOnClickListener(listener4);
button5 = (Button) findViewById(R.id.button6);
button5.setOnClickListener(listener5);
button6 = (Button) findViewById(R.id.button7);
button6.setOnClickListener(listener6);
button7 = (Button) findViewById(R.id.button8);
button7.setOnClickListener(listener7);
button8 = (Button) findViewById(R.id.button9);
button8.setOnClickListener(listener8);
button9 = (Button) findViewById(R.id.button10);
button9.setOnClickListener(listener10);
button10 = (Button) findViewById(R.id.button11);
button11 = (Button) findViewById(R.id.button12);
button12 = (Button) findViewById(R.id.button13);
button13 = (Button) findViewById(R.id.button14);
button13.setOnClickListener(listener13);
button14 = (Button) findViewById(R.id.button15);
button14.setOnClickListener(listener14);
editText1 = (EditText)findViewById(R.id.editText1);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_count_main, menu);
return true;
}
}
这2处真心想不到怎么弄了,求高手解答。情况是这样的,我暂时只做了乘法,但是我只能生成一个editText1_value1,其他的不能生成了,我让editText1.setText("");都设置不了不知道哪里出问题了,求高手解答!!!
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故意这样写的吗?
如果是第一次输入就把值赋给被乘数
如果是第二次输入就计算结果 显示
可以用一个OnClickListener处理所有的按键 你这样对象太多
在OnClick里用switch判断是哪个按键就行了public void onClick(View v) {
// TODO Auto-generated method stub
if(v == btn1){
//Things to do
}
if(v == btn2){
//Things to do
}
if(v == btn3){
//Things to do
}
}
boolean firstIsLoaded = false;public void onClick(View v) {
if(firstIsLoaded){
result *= Integer.parseInt(editText1.getText().toString()) ;
//然后显示result
}else{
result = Integer.parseInt(editText1.getText().toString());
}
}
public void onClick(View v) {
if(firstIsLoaded){
result *= Integer.parseInt(editText1.getText().toString()) ;
firstIsLoaded=false;
//然后显示result
}else{
result = Integer.parseInt(editText1.getText().toString());
firstIsLoaded=true;
}
}
public void onClick(View v) {
if(bl){
editText1.setText(editText1.getText().toString());
result *= Integer.parseInt(editText1.getText().toString()) ;
bl=false;
//然后显示result
}else{
result = Integer.parseInt(editText1.getText().toString());
if(bl==false)
editText1.setText("");
bl=true;
}
}
};
我注释的地方是叫你写将result显示给editText的语句的...另外 从editText1取值又赋给editText1是什么意思
else里边bl肯定是false啊...=.=