package
com.example.test3;
import
android.app.AliasActivity;
import
android.app.ProgressDialog;
import
android.os.Bundle;
import
android.view.View;
import
android.widget.EditText;
import
android.widget.TextView;
public
class
MainActivity
extends
AliasActivity{
double
num1 =
0
, num2 =
0
, result =
0
;
@Override
protected
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public
void
click(View v){
EditText et1 = (EditText) findViewById(R.id.et1);
EditText et2 = (EditText) findViewById(R.id.et2);
num1 = Double.parseDouble(et1.getText().toString());
num2 = Double.parseDouble(et2.getText().toString());
switch
(v.getId())
{
case
R.id.btn1:
result = num1 + num2;
break
;
case
R.id.btn2:
result = num1 - num2;
break
;
case
R.id.btn3:
result = num1 * num2;
break
;
case
R.id.btn4:
result = num1 / num2;
break
;
}
}
public
void
click1(View v){
TextView tv1 = (TextView) findViewById(R.id.tv);
final
int
Max =
100
;
final
ProgressDialog progressDialog =
new
ProgressDialog(MainActivity.
this
);
progressDialog.setProgress(
0
);
progressDialog.setTitle(
"正在计算,请稍等..."
);
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressDialog.setMax(Max);
progressDialog.show();
/**
* 开个线程
*/
new
Thread(
new
Runnable() {
@Override
public
void
run() {
int
p =
0
;
while
(p <= Max){
try
{
Thread.sleep(
10
);
p++;
progressDialog.setProgress(p);
}
catch
(Exception e){
e.printStackTrace();
}
}
progressDialog.cancel();
}
}).start();
tv1.setText(
"计算结果:"
+ result +
""
);
}
public
void
click2(View v){
EditText et1 = (EditText) findViewById(R.id.et1);
EditText et2 = (EditText) findViewById(R.id.et2);
TextView tv = (TextView) findViewById(R.id.tv);
et1.setText(
""
);
et2.setText(
""
);
tv.setText(
""
);
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#786678" >
<EditText
android:id="@+id/et1"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<EditText
android:id="@+id/et2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/et1" />
<Button
android:id="@+id/btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/et2"
android:onClick="click"
android:text="+" />
<Button
android:id="@+id/btn2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/et2"
android:layout_toRightOf="@id/btn1"
android:onClick="click"
android:text="-" />
<Button
android:id="@+id/btn3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/et2"
android:layout_toRightOf="@id/btn2"
android:onClick="click"
android:text="*" />
<Button
android:id="@+id/btn4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/et2"
android:layout_toRightOf="@id/btn3"
android:onClick="click"
android:text="/" />
<Button
android:id="@+id/btn5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/btn1"
android:layout_marginLeft="20dp"
android:background="#895865"
android:onClick="click1"
android:text="计算"
android:textColor="#024488" />
<Button
android:id="@+id/btn6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/btn4"
android:layout_marginLeft="135dp"
android:layout_toRightOf="@id/btn5"
android:background="#895865"
android:onClick="click2"
android:text="清空"
android:textColor="#024488" />
<TextView
android:id="@+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/btn5"
android:layout_marginLeft="20dp"
android:layout_marginTop="20dp"
android:text="计算结果:" />
</RelativeLayout>