基于Android的车间通风数据采集系统

可借用代码部分：

1.绑定按钮与文本与当按下按键的操作：

textView1=(EditText)findViewById(R.id.editText1);
        textView2=(EditText)findViewById(R.id.editText2);
        textView3=(EditText)findViewById(R.id.editText3);
        final Button btn1=(Button)findViewById(R.id.btn_start);
        final Button btn2=(Button)findViewById(R.id.btn_close);

        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, Second2Activity.class);
                startActivityForResult(intent, SUBACTIVITY1);
            }
        });

btn1则是前面定义的按键绑定，可以更改，可以改成btn2.xxxxx

2.A的界面跳转到B的界面执行相应的操作。操作执行完毕之后，从B的界面跳转回A的界面，并传输回一些数据（onActivityResult函数的用法）

在主Activity定义2个标识号：

    private static final  int SUBACTIVITY1 =1;
    private static final  int SUBACTIVITY2 =2;

 跳转到B界面使用该函数：

startActivityForResult(intent, SUBACTIVITY1);

 将我们的这个信号传过去。跳转不同的界面，用不同的标识号，可以在前面定义。

之后设置回调函数：

    protected void onActivityResult(int requestCode,int resultCode,Intent data) {
        super.onActivityResult(requestCode, requestCode, data);
        switch (requestCode){
            case  SUBACTIVITY1:
                if (resultCode == RESULT_OK) {
                    textView1.setText(data.getStringExtra("chejian"));
                    textView2.setText(data.getStringExtra("cangku"));
                    textView3.setText(data.getStringExtra("loudao"));
                }
                break;


            case SUBACTIVITY2:
                break;
            default:
                break;
        }
    }

 在B界面调用setResult方法之后，A界面就已经收到了发送的数据

 String uriString = editText.getText().toString();
                String uriString2 = editText2.getText().toString();
                String uriString3 = editText3.getText().toString();
                Intent intent =new Intent(Second2Activity.this,MainActivity.class);
                Bundle bundle = new Bundle();//创建并实例化一个Bundle对象
                bundle.putCharSequence("chejian",uriString );
                bundle.putCharSequence("cangku", uriString2);
                bundle.putCharSequence("loudao", uriString3);
                intent.putExtras(bundle);
                setResult(RESULT_OK, intent);
            finish();

则A界面 收到了信号RESULT_OK,

    protected void onActivityResult(int requestCode,int resultCode,Intent data) {
        super.onActivityResult(requestCode, requestCode, data);
        switch (requestCode){
            case  SUBACTIVITY1:
                if (resultCode == RESULT_OK) {
                    textView1.setText(data.getStringExtra("chejian"));
                    textView2.setText(data.getStringExtra("cangku"));
                    textView3.setText(data.getStringExtra("loudao"));
                }
                break;


            case SUBACTIVITY2:
                break;
            default:
                break;
        }
    }

实例视频：

基于Android studio的车间通风数据采集系统实例视

完整代码：

MainActivity:

package com.huangfushi.hfs192025214_tongfengxitongcaiji;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends Activity {
    private static final  int SUBACTIVITY1 =1;
    private static final  int SUBACTIVITY2 =2;
    EditText textView1;
    EditText textView2;
    EditText textView3;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        setContentView(R.layout.activity_main);
        textView1=(EditText)findViewById(R.id.editText1);
        textView2=(EditText)findViewById(R.id.editText2);
        textView3=(EditText)findViewById(R.id.editText3);
        final Button btn1=(Button)findViewById(R.id.btn_start);
        final Button btn2=(Button)findViewById(R.id.btn_close);

        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, Second2Activity.class);
                startActivityForResult(intent, SUBACTIVITY1);
            }
        });
        btn2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                System.exit(0);
            }
        });


    }
    @Override
    protected void onActivityResult(int requestCode,int resultCode,Intent data) {
        super.onActivityResult(requestCode, requestCode, data);
        switch (requestCode){
            case  SUBACTIVITY1:
                if (resultCode == RESULT_OK) {
                    textView1.setText(data.getStringExtra("chejian"));
                    textView2.setText(data.getStringExtra("cangku"));
                    textView3.setText(data.getStringExtra("loudao"));
                }
                break;


            case SUBACTIVITY2:
                break;
            default:
                break;
        }
    }
}

Second2:

package com.huangfushi.hfs192025214_tongfengxitongcaiji;

import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class Second2Activity extends AppCompatActivity {
    final public int CODE = 0x717;
    private static final int SUBACTIVITY1 = 1;
    private static final int SUBACTIVITY2 = 2;
    private static final int SUBACTIVITY3 = 3;
    TextView textView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.content_main);

        final EditText editText = (EditText) findViewById(R.id.edit);
        final EditText editText2 = (EditText) findViewById(R.id.edit2);
        final EditText editText3 = (EditText) findViewById(R.id.edit3);
        final Button btnOK = (Button) findViewById(R.id.ok);
        final Button btnCancel = (Button) findViewById(R.id.cancel);


        btnOK.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String uriString = editText.getText().toString();
                String uriString2 = editText2.getText().toString();
                String uriString3 = editText3.getText().toString();
                Intent intent =new Intent(Second2Activity.this,MainActivity.class);
                Bundle bundle = new Bundle();//创建并实例化一个Bundle对象
                bundle.putCharSequence("chejian",uriString );
                bundle.putCharSequence("cangku", uriString2);
                bundle.putCharSequence("loudao", uriString3);
              intent.putExtras(bundle);
                setResult(RESULT_OK, intent);
            finish();

            }
        });

        btnCancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                setResult(RESULT_CANCELED, null);
                finish();
            }
        });
    }
}

main.xml:

content_main.xml: