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说一说 Android开启手电筒功能完美适配Android4x,5x,6x
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摘要: 最近在研究开启安卓手电筒功能，总结了下Android4x、5x、6x的手电筒开启方法，写成公共方法，分享给大家。 添加摄像机和闪光灯...
最近在研究开启手电筒功能，总结了下Android4x、5x、6x的手电筒开启方法，写成公共方法，分享给大家。
添加摄像机和闪光灯权限
android:name="android.permission.FLASHLIGHT" /&
android:name="android.permission.CAMERA" /&
android:name="android.hardware.camera" /&
android:name="android.hardware.autofocus" /&
&?xml version="1.0" encoding="utf-8"?&
xmlns:android="/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"&
android:id="@+id/btn_open" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:text="打开手电筒" /&
android:id="@+id/btn_close" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="关闭手电筒" /&
/** * Created by 猴子搬来的救兵Castiel * 博客地址：cool.net/mynameishuangshuai */
public class MainActivity extends AppCompatActivity {
private CameraM
private Camera m_Camera = null;
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btnOpen = (Button) findViewById(R.id.btn_open);
Button btnClose = (Button) findViewById(R.id.btn_close);
manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
String[] camerList = manager.getCameraIdList();
for (String str : camerList) {
} catch (CameraAccessException e) {
Log.e("error", e.getMessage());
btnOpen.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
lightSwitch(false);
btnClose.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
lightSwitch(true);
/** * 手电筒控制方法 * * lightStatus * */
private void lightSwitch(final boolean lightStatus) {
if (lightStatus) {
if (Build.VERSION.SDK_INT &= Build.VERSION_CODES.M) {
manager.setTorchMode("0", false);
} catch (Exception e) {
e.printStackTrace();
if (m_Camera != null) {
m_Camera.stopPreview();
m_Camera.release();
m_Camera = null;
if (Build.VERSION.SDK_INT &= Build.VERSION_CODES.M) {
manager.setTorchMode("0", true);
} catch (Exception e) {
e.printStackTrace();
final PackageManager pm = getPackageManager();
final FeatureInfo[] features = pm.getSystemAvailableFeatures();
for (final FeatureInfo f : features) {
if (PackageManager.FEATURE_CAMERA_FLASH.equals(f.name)) {
if (null == m_Camera) {
m_Camera = Camera.open();
final Camera.Parameters parameters = m_Camera.getParameters();
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
m_Camera.setParameters(parameters);
m_Camera.startPreview();
/** * 判断Android系统版本是否 &= M(API23) */
private boolean isM() {
if (Build.VERSION.SDK_INT &= Build.VERSION_CODES.M) {
return true;
return false;
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