本文实例为大家分享了android调用手机摄像头拍照和录音功能的具体代码，供大家参考，具体内容如下
调用摄像头拍照：
public class mainactivity extends activity {
private button button;
private imageview imageview;
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
imageview= (imageview) findviewbyid(r.id.imageview);
button= (button) findviewbyid(r.id.btn);
button.setonclicklistener(new view.onclicklistener() {
@override
public void onclick(view view) {
intent intent=new intent(mediastore.action_image_capture);
startactivityforresult(intent,1);
}
});
}
@override
protected void onactivityresult(int requestcode, int resultcode, intent data) {
super.onactivityresult(requestcode, resultcode, data);
if(resultcode==result_ok){
bundle bundle=data.getextras();
bitmap bitmap= (bitmap) bundle.get("data");
if(environment.getexternalstoragestate().equals(environment.media_mounted)){
file file=new file(environment.getexternalstoragedirectory(),"myimage");
if(!file.exists()){
file.mkdir();
}
try {
string date=new simpledateformat("yyyymmddhhmmss").format(new date());
string path=file+"/"+date+".jpg";
fileoutputstream outputstream=new fileoutputstream(path);
bitmap.compress(bitmap.compressformat.jpeg,100,outputstream);
} catch (filenotfoundexception e) {
e.printstacktrace();
}
}
imageview.setimagebitmap(bitmap);
}
}
}
布局文件
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:gravity="center" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="hello world!" /> <imageview android:id="@+id/imageview" android:layout_width="200dp" android:layout_height="200dp" /> </linearlayout>
调用录音功能：
public class main2activity extends activity implements view.onclicklistener,adapterview.onitemclicklistener{
private listview listview;//录音文件控件
private button btn1,btn2;//开始按钮和停止按钮
private mediarecorder recorder;//录音对象
private list<string> list=new arraylist<>();//录音文件数据源
private file path,recorderfile;//根目录，要存入sd卡的录音文件
private arrayadapter adapter;//适配器
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main2);
init();
if(null!=path){
musiclist();
}
}
//初始化时获得所有录音文件
private void musiclist() {
file home=path;
//判断文件过滤器的长度是否大于0，大于则适配到listview上，小于则不设置上去
if(home.listfiles(new musicfilter()).length>0){
for(file file:home.listfiles(new musicfilter())){
list.add(file.getname());
}
adapter=new arrayadapter(this,android.r.layout.simple_list_item_1,list);
listview.setadapter(adapter);
}
}
private void init() {
listview= (listview) findviewbyid(r.id.listview);
listview.setonitemclicklistener(this);
btn1= (button) findviewbyid(r.id.start);
btn2= (button) findviewbyid(r.id.stop);
btn1.setonclicklistener(this);
btn2.setonclicklistener(this);
path=getpath();//获得根目录
}
private file getpath() {
file file=null;
//判断sd卡状态
if(environment.getexternalstoragestate().equals(environment.media_mounted)){
file=environment.getexternalstoragedirectory();
}else{
toast.maketext(this,"没有sd卡",toast.length_short).show();
}
return file;
}
@override
public void onclick(view view) {
switch (view.getid()){
//开始按钮
case r.id.start:
startrecorder();
btn1.setenabled(false);
btn2.setenabled(true);
break;
//停止按钮
case r.id.stop:
stoprecorder();
btn1.setenabled(true);
btn2.setenabled(false);
break;
}
}
private void stoprecorder() {
//如果录音的文件不为null
if(recorderfile!=null){
//停止录音
recorder.stop();
//把录音文件的名字加入集合里
list.add(recorderfile.getname());
if(adapter!=null){
//刷新适配器
adapter.notifydatasetchanged();
}
//释放录音对象
recorder.release();
recorder=null;
}
}
private void startrecorder() {
//创建录音对象
recorder=new mediarecorder();
//设置麦克风
recorder.setaudiosource(mediarecorder.audiosource.mic);
//设置转码类型
recorder.setoutputformat(mediarecorder.outputformat.three_gpp);
//设置编码方式
recorder.setaudioencoder(mediarecorder.audioencoder.amr_nb);
try {
//创建录音文件
recorderfile=file.createtempfile("录音_",".amr",path);
//设置录音的数据写到录音文件里
recorder.setoutputfile(recorderfile.getabsolutepath());
//录音准备
recorder.prepare();
//录音开始
recorder.start();
} catch (ioexception e) {
e.printstacktrace();
}
}
@override
public void onitemclick(adapterview<?> adapterview, view view, int i, long l) {
//获得点击条目的路径
file file=new file(path.getabsolutepath()+file.separator+list.get(i));
playmusic(file);
}
//调用播放器播放点击的条目文件
private void playmusic(file file) {
intent intent = new intent(intent.action_view);
uri uri = uri.fromfile(file);
intent.setdataandtype(uri, "audio/mp3");
startactivity(intent);
}
}
文件过滤代码：
public class musicfilter implements filenamefilter {
@override
public boolean accept(file file, string name) {
return (name.endswith(".amr"));
}
}
布局文件：
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"> <button android:id="@+id/start" android:text="开始录音" android:layout_width="match_parent" android:layout_height="wrap_content" /> <button android:id="@+id/stop" android:text="停止录音" android:layout_width="match_parent" android:layout_height="wrap_content" /> <listview android:id="@+id/listview" android:layout_width="match_parent" android:layout_height="match_parent"></listview> </linearlayout>
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。
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