Android studio編寫簡單的手電筒APP

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很不錯的手電筒APP,分享給大家,希望大家喜歡。

1. Java程式碼    


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("關");
} else {
parameters = camera.getParameters();
parameters.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(parameters);
islight = true;
button.setText("開");
}
}
});
}
}

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("關");
} else {
parameters = camera.getParameters();
parameters.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(parameters);
islight = true;
button.setText("開");
}
}
});
}
}

3. content_fire.xml


<?xml version="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="電筒模式"
android:textSize="34sp"
android:textStyle="bold"
android:gravity="center"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@ id/bn"
android:textOff="關"
android:textOn="開"
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:textStyle="bold"
android:textSize="100sp"
/>
</RelativeLayout>