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activity_flash.java
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package com.example.tx1;
import android.app.Activity;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Switch;
public class activity_flash extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_flash);
Switch sch_flash = (Switch) findViewById(R.id.sch_flash);
sch_flash.setOnCheckedChangeListener(new OnCheckedChangeListener() {
private Camera camera;
private Parameters parameter;
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
camera = Camera.open();
camera.startPreview();
parameter = camera.getParameters();
parameter.setFlashMode(Parameters.FLASH_MODE_TORCH);
camera.setParameters(parameter);
} else {
// ¹Ø±ÕÊÖµçͲ
if (camera == null)
camera = Camera.open();
parameter = camera.getParameters();
parameter.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(parameter);
camera.release();
}
}
});
}
}