很不错的手电筒APP，分享给大家，希望大家喜欢。

1. Java代码

package com.example.goo.gfire; import android.app.Activity; import android.hardware.Camera; import android.hardware.Camera.Parameters; import android.os.Bundle; import android.view.View; import android.widget.Button; public class FireActivity extends Activity { private Button button; private Camera camera = Camera.open(); private Parameters parameters; private boolean islight=true; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_fire); button = (Button) this.findViewById(R.id.bn); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (islight) { camera.startPreview(); parameters = camera.getParameters(); parameters.setFlashMode(Parameters.FLASH_MODE_TORCH); camera.setParameters(parameters); islight = false ; button.setText("关"); } else { parameters = camera.getParameters(); parameters.setFlashMode(Parameters.FLASH_MODE_OFF); camera.setParameters(parameters); islight = true; button.setText("开"); } } }); } }

2. FireActivity.java

package com.example.goo.gfire; import android.app.Activity; import android.hardware.Camera; import android.hardware.Camera.Parameters; import android.os.Bundle; import android.view.View; import android.widget.Button; public class FireActivity extends Activity { private Button button; private Camera camera = Camera.open(); private Parameters parameters; private boolean islight=true; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_fire); button = (Button) this.findViewById(R.id.bn); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (islight) { camera.startPreview(); parameters = camera.getParameters(); parameters.setFlashMode(Parameters.FLASH_MODE_TORCH); camera.setParameters(parameters); islight = false ; button.setText("关"); } else { parameters = camera.getParameters(); parameters.setFlashMode(Parameters.FLASH_MODE_OFF); camera.setParameters(parameters); islight = true; button.setText("开"); } } }); } }

3. content_fire.xml

<"1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" app:layout_behavior="@string/appbar_scrolling_view_behavior" tools:context="com.example.goo.gfire.FireActivity" tools:showIn="@layout/activity_fire"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="电筒模式" android:textSize="34sp" android:text android:gravity="center"/> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/bn" android:textOff="关" android:textOn="开" android:height="400dp" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:layout_marginBottom="59dp" android:fontFeatureSettings="@string/auth_google_play_services_client_facebook_display_name" android:textColor="@color/common_signin_btn_dark_text_focused" android:text android:textSize="100sp" /> </RelativeLayout>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持查字典教程网。