demo04calc

package com.example.demo05simplecalc;

import android.os.Bundle;

import android.app.Activity;

import android.speech.tts.TextToSpeech;

import android.view.Menu;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

public class MainActivity extends Activity {

    private int no1=;

    private int no2=;

    private EditText editText1=null;

    private EditText editText2=null;

    private Button btnAdd=null;

    private Button btnSub=null;

    private Button btnMul=null;

    private Button btnDiv=null;

    private TextView fuhao=null;

    private TextView jieguo=null;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        this.editText1 = (EditText) super.findViewById(R.id.no1);

        this.editText2 = (EditText)super.findViewById(R.id.no2);

        this.editText1.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                MainActivity.this.editText1.setText("");

            }

        });

        this.editText2.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                MainActivity.this.editText2.setText("");

            }

        });

        this.btnAdd = (Button) super.findViewById(R.id.btnAdd);

        this.btnSub = (Button)super.findViewById(R.id.btnSub);

        this.btnMul = (Button)super.findViewById(R.id.btnMul);

        this.btnDiv = (Button)super.findViewById(R.id.btnDel);

        this.btnAdd.setOnClickListener(new AddListener());

        this.btnSub.setOnClickListener(new SubListener());

        this.btnMul.setOnClickListener(new MulListener());

        this.btnDiv.setOnClickListener(new DivListener());

        this.fuhao=(TextView)super.findViewById(R.id.fuhao);

        this.jieguo=(TextView)super.findViewById(R.id.jieguo);

    }

    private class AddListener implements View.OnClickListener {

        @Override

        public void onClick(View view) {

            MainActivity.this.no1 =Integer.parseInt( MainActivity.this.editText1.getText().toString());

            MainActivity.this.no2 =Integer.parseInt( MainActivity.this.editText2.getText().toString());

            MainActivity.this.fuhao.setText("+");

            MainActivity.this.jieguo.setText(String.valueOf(no1+no2));

        }

    };

    private class SubListener implements View.OnClickListener {

        @Override

        public void onClick(View view) {

            MainActivity.this.no1 =Integer.parseInt( MainActivity.this.editText1.getText().toString());

            MainActivity.this.no2 =Integer.parseInt( MainActivity.this.editText2.getText().toString());

            MainActivity.this.fuhao.setText("-");

            MainActivity.this.jieguo.setText(String.valueOf(no1-no2));

        }

    };

    private class MulListener implements View.OnClickListener {

        @Override

        public void onClick(View view) {

            MainActivity.this.no1 =Integer.parseInt( MainActivity.this.editText1.getText().toString());

            MainActivity.this.no2 =Integer.parseInt( MainActivity.this.editText2.getText().toString());

            MainActivity.this.fuhao.setText("*");

            MainActivity.this.jieguo.setText(String.valueOf(no1*no2));

        }

    };

    private class DivListener implements View.OnClickListener {

        @Override

        public void onClick(View view) {

            MainActivity.this.no1 =Integer.parseInt( MainActivity.this.editText1.getText().toString());

            MainActivity.this.no2 =Integer.parseInt( MainActivity.this.editText2.getText().toString());

            MainActivity.this.fuhao.setText("/");

            MainActivity.this.jieguo.setText(String.valueOf(no1/no2));

        }

    };

//    @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;

//    }

}