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);
/* @setProgress 设置初始进度
* @setProgressStyle 设置样式（水平进度条）
* @setMax 设置进度最大值
*/
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();//达到最大就消失
}
}).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>
