Add Android apk SDK source code

android

2024-07-25 2dcf9cc893a27c50d538baf8b5d47ff06fe495d8

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package com.example.serial; 
import static java.lang.Thread.sleep; 
 
import androidx.appcompat.app.AppCompatActivity; 
 
import android.graphics.PorterDuff; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 
 
public class LedActivity extends AppCompatActivity { 
    private boolean redTag = false; 
    private boolean greenTag = false; 
    private boolean yellowTag = false; 
    private Button ledRed = null; 
    private Button ledGreen = null; 
    private Button ledYellow = null; 
    private ImageView imageRed = null; 
    private ImageView imageGreen = null; 
    private ImageView imageYellow = null; 
    private LedControl ledControl; 
 
 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
 
        setContentView(R.layout.activity_led); 
 
        ledRed = (Button)findViewById(R.id.red); 
        ledYellow = (Button)findViewById(R.id.yellow); 
        ledGreen = (Button)findViewById(R.id.green); 
 
        imageRed = findViewById(R.id.imageRed); 
        imageYellow = findViewById(R.id.imageYellow); 
        imageGreen = findViewById(R.id.imageGreen); 
 
        ledControl = new LedControl(); 
        ledControl.ledCtrl(1, 0); 
        try { 
            sleep(1); 
            ledControl.ledCtrl(1, 1); 
        } catch (InterruptedException e) { 
            throw new RuntimeException(e); 
        } 
 
 
        ledRed.setOnClickListener(new View.OnClickListener(){ 
            @Override 
            public void onClick(View v) { 
                redTag = !redTag; 
                if( redTag ) { 
                    if(ledControl.ledCtrl(0, 0) < 0) 
                        Toast.makeText(LedActivity.this, "点亮红灯失败", Toast.LENGTH_SHORT).show(); 
                    else 
                        imageRed.setColorFilter(getResources().getColor(android.R.color.holo_red_light), PorterDuff.Mode.SRC_IN); 
                }else{ 
                    if(ledControl.ledCtrl(0, 1) < 0) 
                        Toast.makeText(LedActivity.this, "关闭红灯失败", Toast.LENGTH_SHORT).show(); 
                    else 
                        imageRed.setColorFilter(getResources().getColor(android.R.color.darker_gray), PorterDuff.Mode.SRC_IN); 
                } 
            } 
        }); 
        ledYellow.setOnClickListener(new View.OnClickListener(){ 
            @Override 
            public void onClick(View v) { 
                yellowTag = !yellowTag; 
                if( yellowTag ) { 
                    if( ledControl.ledCtrl(1, 0) < 0){ 
                        Toast.makeText(LedActivity.this, "点亮黄灯失败!", Toast.LENGTH_SHORT).show(); 
                    }else { 
                        imageYellow.setColorFilter(getResources().getColor(android.R.color.holo_orange_light), PorterDuff.Mode.SRC_IN); 
                    } 
                }else{ 
                    if( ledControl.ledCtrl(1, 1) < 0 ){ 
                        Toast.makeText(LedActivity.this, "关闭黄灯失败!", Toast.LENGTH_SHORT).show(); 
                    }else 
                        imageYellow.setColorFilter(getResources().getColor(android.R.color.darker_gray), PorterDuff.Mode.SRC_IN); 
                } 
            } 
        }); 
 
        ledGreen.setOnClickListener(new View.OnClickListener(){ 
            @Override 
            public void onClick(View v) { 
                greenTag = !greenTag; 
                if( greenTag ) { 
                    if(ledControl.ledCtrl(2, 0) < 0) 
                        Toast.makeText(LedActivity.this, "打开绿灯失败", Toast.LENGTH_SHORT).show(); 
                    else 
                        imageGreen.setColorFilter(getResources().getColor(android.R.color.holo_green_light), PorterDuff.Mode.SRC_IN); 
                }else{ 
                    if(ledControl.ledCtrl(2, 1) < 0) 
                        Toast.makeText(LedActivity.this, "关闭绿灯失败", Toast.LENGTH_SHORT).show(); 
                    else 
                        imageGreen.setColorFilter(getResources().getColor(android.R.color.darker_gray), PorterDuff.Mode.SRC_IN); 
                } 
            } 
        }); 
 
        ledControl.ledCtrl(0, 1); 
        ledControl.ledCtrl(1, 1); 
        ledControl.ledCtrl(2, 1); 
    } 
}