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android平台手电筒开发源代码

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08/30
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android平台手电筒开发源代码，AndroidManifest.xml文件的入口是startapp，这个文件没上传上来，大家可以自己写。

1. [代码]android

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/**
 * name   : 手电筒主界面
 * author : ycgpp@126.com
 * date    : 2012-12-21 15:50:17
 */
package com.android.app;
 
import android.app.Activity;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
 
public class Main extends Activity {
 
    private boolean isopent = false;
    private Camera camera;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        View view = View.inflate(this, R.layout.main, null);
        setContentView(view);
        TextView img_but = (TextView) findViewById(R.id.main_img);
 
        img_but.setOnClickListener(new View.OnClickListener() {
 
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                if (!isopent) {
                    Toast.makeText(getApplicationContext(), "您已经打开了手电筒", 0)
                            .show();
                    camera = Camera.open();
                    Parameters params = camera.getParameters();
                    params.setFlashMode(Parameters.FLASH_MODE_TORCH);
                    camera.setParameters(params);
                    camera.startPreview(); // 开始亮灯
 
                    isopent = true;
                } else {
                    Toast.makeText(getApplicationContext(), "关闭了手电筒",
                            Toast.LENGTH_SHORT).show();
                    camera.stopPreview(); // 关掉亮灯
                    camera.release(); // 关掉照相机
                    isopent = false;
                }
            }
        });
    }
 
}

2. [代码]布局文件代码

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
 
    <TextView
        android:id="@+id/main_img"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="@drawable/main_body">
    </TextView>
 
</LinearLayout>

3. [代码]AndroidManifest.xml文件   悦德财富：https://www.yuedecaifu.com

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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.android.app"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />
 
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity android:name=".AppStart" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".Main" >
        </activity>
    </application>
    <!-- 摄像头、手电筒 -->
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.FLASHLIGHT" />
 
    <uses-feature android:name="android.hardware.camera" />
    <uses-feature android:name="android.hardware.camera.autofocus" />
    <uses-feature android:name="android.hardware.camera.flash" />
 
</manifest>