android 中實現(xiàn)網(wǎng)頁調(diào)用攝像頭功能？怎么實現(xiàn)？

android 中實現(xiàn)網(wǎng)頁調(diào)用攝像頭功能方法·如下：

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1. 首先在Manifest.xml中添加如下權(quán)限：

!-- 訪問網(wǎng)絡(luò)權(quán)限 --

uses-permission android:name="android.permission.INTERNET"/

!-- 調(diào)用攝像頭的權(quán)限 --

uses-permission android:name="android.permission.CAMERA"/

!-- 文件系統(tǒng)權(quán)限 --

uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/

!-- SD卡寫權(quán)限 --

uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/

2. 編寫index.html放在android項目下的assests目錄下：

index.html:

html

head

titleWebview capture testing.../title

script type="text/javascript"

//android中調(diào)用js方法

function wave() {

alert('cc2');

document.getElementById("droid").innerHTML ="android_waving.png";

}

//android中調(diào)用js方法2，并更id為"droid"的span標(biāo)簽的值及新剛拍的照片顯示到"pic0"里

function wave2(name) {

alert(name);

document.getElementById("droid").innerHTML = "Photopath: " + name;

document.getElementById("pic0").src=name;

}

//html的點擊事件，并通過"window.demo.clickOnAndroid"觸發(fā)android中的clickOnAndroid方法

function clickOnHtml () {

var fileName = window.demo.clickOnAndroid();

//wave2(fileName);

}

//

function revert() {

alert('cc');

document.getElementById("droid").innerHTML ="aa2";

}

/script

style type="text/css"

body{

font:14px;

color:#333;

line-height: 1.8em;

margin: 0;

padding: 0;

width:480px;

}

html{

outline: none;

hide-focus:expression(this.hideFocus=true);

}

/style

/head

body

div

li

pHere is the funtion to TakePhoto in html/p

!-- 通過"window.demo.clickOnAndroid"觸發(fā)android中的clickOnAndroid方法 --

a onClick="window.demo.clickOnAndroid()"TakePhoto/abr/

span id='droid'Photopath:/span

br/

br/

pHere is the funtion to revert in html/p

input type="button" onclick="revert();" value="Revert" / br/

input type="button" onclick="javascript:window.top.location.reload()" value="Refresh" /

/li

/div

div

p id="picpath"PhotoPath/p

img alt="ddd" id="pic0" width="200" height="200" src="/storage/sdcard0/webview_camera/testimg23.8156950140954181.jpg" /

/div

/body

/html

3、編寫Activity的布局activity_camera_webview.xml：

RelativeLayout xmlns:android=""

xmlns: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"

tools:context=".CameraWebviewActivity"

Button

android:id="@+id/bt"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Camera"

android:layout_alignParentTop="true"

/

WebView

android:id="@+id/wv"

android:layout_width="fill_parent"

android:layout_height="match_parent"

android:layout_below="@+id/bt"

/

/RelativeLayout

4.、編寫activity：

public class CameraWebviewActivity extends Activity {

private final static String TAG = "CameraWebviewActivity";

private Button bt;

private WebView wv;

public String fileFullName;//照相后的照片的全整路徑

private boolean fromTakePhoto; //是否是從攝像界面返回的webview

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_camera_webview);

initViews();

}

private void initViews() {

bt = (Button) findViewById(R.id.bt);

bt.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

System.out.println("----------------");

takePhoto( Math.random()*1000+1 + ".jpg");

}

});

wv = (WebView) findViewById(R.id.wv);

WebSettings setting = wv.getSettings();

setting.setJavaScriptEnabled(true);

wv.setWebViewClient(new WebViewClient(){

@Override

public void onPageStarted(WebView view, String url, Bitmap favicon) {

super.onPageStarted(view, url, favicon);

}

@Override

public boolean shouldOverrideUrlLoading(WebView view, String url) {

return super.shouldOverrideUrlLoading(view, url);

}

@Override

public void onPageFinished(WebView view, String url) {

super.onPageFinished(view, url);

}

});

wv.setWebChromeClient(new WebChromeClient(){

@Override//實現(xiàn)js中的alert彈窗在Activity中顯示

public boolean onJsAlert(WebView view, String url, String message, JsResult result) {

Log.d(TAG, message);

result.confirm();

return true;

}

});

wv.loadUrl("");

final Handler mHandler = new Handler();

//webview增加javascript接口，監(jiān)聽html頁面中的js點擊事件

wv.addJavascriptInterface(new Object(){

public String clickOnAndroid() {//將被js調(diào)用

mHandler.post(new Runnable() {

public void run() {

fromTakePhoto = true;

//調(diào)用 啟用攝像頭的自定義方法

takePhoto("testimg" + Math.random()*1000+1 + ".jpg");

System.out.println("========fileFullName: " + fileFullName);

}

});

return fileFullName;

}

}, "demo");

}

/*

* 調(diào)用攝像頭的方法

*/

public void takePhoto(String filename) {

System.out.println("----start to take photo2 ----");

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

intent.putExtra(MediaStore.EXTRA_MEDIA_TITLE, "TakePhoto");

//判斷是否有SD卡

String sdDir = null;

boolean isSDcardExist = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);

if(isSDcardExist) {

sdDir = Environment.getExternalStorageDirectory().getAbsolutePath();

} else {

sdDir = Environment.getRootDirectory().getAbsolutePath();

}

//確定相片保存路徑

String targetDir = sdDir + "/" + "webview_camera";

File file = new File(targetDir);

if (!file.exists()) {

file.mkdirs();

}

fileFullName = targetDir + "/" + filename;

System.out.println("----taking photo fileFullName: " + fileFullName);

//初始化并調(diào)用攝像頭

intent.putExtra(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");

intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(fileFullName)));

startActivityForResult(intent, 1);

}

/*

* (non-Javadoc)

* @see android.app.Activity#onActivityResult(int, int, android.content.Intent)

* 重寫些方法，判斷是否從攝像Activity返回的webview activity

*/

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

System.out.println("----requestCode: " + requestCode + "; resultCode " + resultCode + "; fileFullName: " + fileFullName);

if (fromTakePhoto requestCode ==1 resultCode ==-1) {

wv.loadUrl("javascript:wave2('" + fileFullName + "')");

} else {

wv.loadUrl("javascript:wave2('Please take your photo')");

}

fromTakePhoto = false;

super.onActivityResult(requestCode, resultCode, data);

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.camera_webview, menu);

return true;

}

}

如何直接調(diào)用安卓Android的系統(tǒng)相機的前置攝像頭

1、在手機的設(shè)置里面去找相機的設(shè)置，

在照相的功能下也可以在選項里面找到更換攝像頭的選項，

一般都是按左鍵出來選單的。

2、在手機菜單里面勾選攝像頭選項，切換到你想要的攝像頭，然后把那個屏幕切換一下，豎屏或橫屏；

3、你若是在找不到就到手機鋪里面找售后維修或者在照片拍攝好后，在電腦上面把使用那個圖像管理器把圖片，點擊那個轉(zhuǎn)換頭，讓圖片正過來。

android 中實現(xiàn)網(wǎng)頁調(diào)用攝像頭功能？怎么實現(xiàn)

android 中實現(xiàn)網(wǎng)頁調(diào)用攝像頭功能方法·如下： 1/apk/res/android" xmlns:tools="schemas/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" tools:context=".CameraWebviewActivity" Button android:id="@+id/bt" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Camera" android:layout_alignParentTop="true" /WebView android:id="@+id/wv" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_below="@+id/bt" //RelativeLayout 4.、編寫activity： public class CameraWebviewActivity extends Activity {private final static String TAG = "CameraWebviewActivity";private Button bt; private WebView wv; public String fileFullName;//照相后的照片的全整路徑 private boolean fromTakePhoto; //是否是從攝像界面返回的webview@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_camera_webview); initViews(); }private void initViews() {bt = (Button) findViewById(R.id.bt); bt.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { System.out.println("----------------"); takePhoto( Math.random()*1000+1 + ".jpg"); } });wv = (WebView) findViewById(R.id.wv); WebSettings setting = wv.getSettings(); setting.setJavaScriptEnabled(true); wv.setWebViewClient(new WebViewClient(){ @Override public void onPageStarted(WebView view, String url, Bitmap favicon) { super.onPageStarted(view, url, favicon); }@Override public boolean shouldOverrideUrlLoading(WebView view, String url) { return super.shouldOverrideUrlLoading(view, url); }@Override public void onPageFinished(WebView view, String url) { super.onPageFinished(view, url); }});wv.setWebChromeClient(new WebChromeClient(){ @Override//實現(xiàn)js中的alert彈窗在Activity中顯示 public boolean onJsAlert(WebView view, String url, String message, JsResult result) { Log.d(TAG, message); result.confirm(); return true; } });wv.loadUrl(""); final Handler mHandler = new Handler(); //webview增加javascript接口，監(jiān)聽html頁面中的js點擊事件 wv.addJavascriptInterface(new Object(){ public String clickOnAndroid() {//將被js調(diào)用 mHandler.post(new Runnable() { public void run() { fromTakePhoto = true; //調(diào)用 啟用攝像頭的自定義方法 takePhoto("testimg" + Math.random()*1000+1 + ".jpg"); System.out.println("========fileFullName: " + fileFullName);} }); return fileFullName; } }, "demo"); }/* * 調(diào)用攝像頭的方法 */ public void takePhoto(String filename) { System.out.println("----start to take photo2 ----"); Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); intent.putExtra(MediaStore.EXTRA_MEDIA_TITLE, "TakePhoto");//判斷是否有SD卡 String sdDir = null; boolean isSDcardExist = Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED); if(isSDcardExist) { sdDir = Environment.getExternalStorageDirectory().getAbsolutePath(); } else { sdDir = Environment.getRootDirectory().getAbsolutePath(); } //確定相片保存路徑 String targetDir = sdDir + "/" + "webview_camera"; File file = new File(targetDir); if (!file.exists()) { file.mkdirs(); } fileFullName = targetDir + "/" + filename; System.out.println("----taking photo fileFullName: " + fileFullName); //初始化并調(diào)用攝像頭 intent.putExtra(MediaStore.Images.Media.MIME_TYPE, "image/jpeg"); intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(fileFullName))); startActivityForResult(intent, 1); }/* * (non-Javadoc) * @see android.app.Activity#onActivityResult(int, int, android.content.Intent) * 重寫些方法，判斷是否從攝像Activity返回的webview activity */ @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { System.out.println("----requestCode: " + requestCode + "; resultCode " + resultCode + "; fileFullName: " + fileFullName); if (fromTakePhoto requestCode ==1 resultCode ==-1) { wv.loadUrl("javascript:wave2('" + fileFullName + "')"); } else { wv.loadUrl("javascript:wave2('Please take your photo')"); } fromTakePhoto = false; super.onActivityResult(requestCode, resultCode, data); }@Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.camera_webview, menu); return true; }}

android怎么調(diào)用手機攝像頭

這個權(quán)限的話通常都是軟件會自動獲取的，像有些軟件需要獲取手機的攝像頭調(diào)用權(quán)限，通常都會默認(rèn)配置的。

如果自己禁止了某些軟件調(diào)用攝像頭，這種情況的話，只需要在手機設(shè)置的權(quán)限管理里面自己設(shè)置一下離學(xué)校有攝像頭就可以了。

Android調(diào)用本機攝像頭后可以移動

Android調(diào)用本機攝像頭后可以移動如下

調(diào)用本機攝像頭//設(shè)置返回碼：標(biāo)志照相機拍攝final int RESULT_CAMERA=100;//設(shè)置一個臨時路徑，保存所拍的照片String savefont = “/storage/sdcard0/”;// 獲取模板路徑File CameraFolder = new File(savefont, “CameraFile”);if (!CameraFolder.exists())//判斷文件夾是否存在，不存在則創(chuàng)建文件夾，已經(jīng)存在跳過{undefinedCameraFolder.mkdir()。

網(wǎng)頁題目：android攝像頭調(diào)用,android調(diào)用攝像頭讀取數(shù)據(jù)
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