Android Studio Test 手电筒核心代码

来源：互联网发布：java和android的前景编辑：程序博客网时间：2024/05/31 19:17

private Switch switchTest=null;private Camera camera=null;        switchTest.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                boolean on=((Switch)v).isChecked();                if(on){                    if(camera==null) {                        camera = Camera.open();                        Toast.makeText(MainActivity.this, "Open", Toast.LENGTH_SHORT);                        camera.startPreview();                        Camera.Parameters parameter = camera.getParameters();                        parameter.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);                        camera.setParameters(parameter);                    }                }                else{                    if(camera!=null){                        Toast.makeText(MainActivity.this, "Close", Toast.LENGTH_SHORT);                        Camera.Parameters parameter=camera.getParameters();                        parameter.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);                        camera.setParameters(parameter);                        camera.release();                        camera=null;                    }                }            }        });

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