CPU：RK3288
系统：Android 5.1
功能：上层 app 控制 led 亮灭
开发板：Firefly RK3288
MainActivity.java
package com.aaron.led; import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button; import com.aaron.link.LedNative; public class MainActivity extends AppCompatActivity {
private final String TAG = "LedApp";
Button led_on;
Button led_off;
LedNative lednative; View.OnClickListener clickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_on:
Log.d(TAG, "Led On");
lednative.onDev();
break;
case R.id.btn_off:
Log.d(TAG, "Led Off");
lednative.offDev();
break;
default:
break;
}
}
}; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); led_on = findViewById(R.id.btn_on);
led_off = findViewById(R.id.btn_off); led_on.setOnClickListener(clickListener);
led_off.setOnClickListener(clickListener); lednative = new LedNative(); lednative.openDev();
Log.d(TAG, "open Dev");
} protected void onDestroy() { super.onDestroy(); lednative.closeDev();
Log.d(TAG, "close Dev");
}
}
LedNative.java
package com.aaron.link; /**
* Created by Administrator on 2018/3/20.
*/ public class LedNative {
static{
System.loadLibrary("firefly_led_jni");
} public native void openDev();
public native int onDev();
public native int offDev();
public native int closeDev();
}