Android应用开发:电话监听和录音代码示例
在oncreate 中执行:
public void oncreate() {
super.oncreate();
log.i("tag", "服务启动了");
// 对电话的来电状态进行监听
telephonymanager telmanager = (telephonymanager) this
.getsystemservice(context.telephony_service);
// 注册一个监听器对电话状态进行监听
telmanager.listen(new myphonestatelistener(),
phonestatelistener.listen_call_state);
}
实现myphonestatelistener:
private class myphonestatelistener extends phonestatelistener {
mediarecorder recorder;
file audiofile;
string phonenumber;
public void oncallstatechanged(int state, string incomingnumber) {
switch (state) {
case telephonymanager.call_state_idle: /* 无任何状态时 */
if (recorder != null) {
recorder.stop(); //停止刻录
recorder.reset(); //重设
recorder.release(); //刻录完成一定要释放资源
}
break;
case telephonymanager.call_state_offhook: /* 接起电话时 */
try {
recorder = new mediarecorder();
recorder.setaudiosource(mediarecorder.audiosource.mic); // 设置音频采集原
recorder.setoutputformat(mediarecorder.outputformat.three_gpp); //内容输出格式
recorder.setaudioencoder(mediarecorder.audioencoder.amr_nb); //音频编码方式
// recorder.setoutputfile("/sdcard/myvoice.amr");
audiofile = new file(
environment.getexternalstoragedirectory(),
phonenumber + "_" + system.currenttimemillis()
+ ".3gp");
recorder.setoutputfile(audiofile.getabsolutepath());
log.i("tag", audiofile.getabsolutepath());
recorder.prepare(); //预期准备
recorder.start();
} catch (illegalstateexception e) {
e.printstacktrace();
} catch (ioexception e) {
e.printstacktrace();
}
break;
case telephonymanager.call_state_ringing: /* 电话进来时 */
phonenumber = incomingnumber;
break;
default:
break;
}
super.oncallstatechanged(state, incomingnumber);
}
}
通过上续两个对应的步骤即可以实现通过server对电话的监听工作,在call_state_idle无状态(即空闲状态)、call_state_offhook 接通电话(即挂起)、call_state_ringing 电话进来(即来电时)这几个状态中执行。
附:android拍照、录像、录音代码范例
package com.cons.dcg.collect;
import java.io.file;
import java.text.simpledateformat;
import java.util.*;
import android.app.*;
import android.content.intent;
import android.database.cursor;
import android.net.uri;
import android.os.asynctask;
import android.os.bundle;
import android.os.environment;
import android.provider.mediastore;
import android.view.*;
import android.widget.*;
public class recordactivity extends activity implements onclicklistener {
private static final int result_capture_image = 1;// 照相的requestcode
private static final int request_code_take_video = 2;// 摄像的照相的requestcode
private static final int result_capture_recorder_sound = 3;// 录音的requestcode
private string strimgpath = "";// 照片文件绝对路径
private string strvideopath = "";// 视频文件的绝对路径
private string strrecorderpath = "";// 录音文件的绝对路径
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
this.setcontentview(r.layout.problem_report);
}
@override
protected void onactivityresult(int requestcode, int resultcode, intent data) {
super.onactivityresult(requestcode, resultcode, data);
switch (requestcode) {
case result_capture_image://拍照
if (resultcode == result_ok) {
toast.maketext(this, strimgpath, toast.length_short).show();
}
break;
case request_code_take_video://拍摄视频
if (resultcode == result_ok) {
uri urivideo = data.getdata();
cursor cursor=this.getcontentresolver().query(urivideo, null, null, null, null);
if (cursor.movetonext()) {
/** _data:文件的绝对路径 ,_display_name:文件名 */
strvideopath = cursor.getstring(cursor.getcolumnindex("_data"));
toast.maketext(this, strvideopath, toast.length_short).show();
}
}
break;
case result_capture_recorder_sound://录音
if (resultcode == result_ok) {
uri urirecorder = data.getdata();
cursor cursor=this.getcontentresolver().query(urirecorder, null, null, null, null);
if (cursor.movetonext()) {
/** _data:文件的绝对路径 ,_display_name:文件名 */
strrecorderpath = cursor.getstring(cursor.getcolumnindex("_data"));
toast.maketext(this, strrecorderpath, toast.length_short).show();
}
}
break;
}
}
/**
* 照相功能
*/
private void cameramethod() {
intent imagecaptureintent = new intent(mediastore.action_image_capture);
strimgpath = environment.getexternalstoragedirectory().tostring() + "/consdcgmpic/";//存放照片的文件夹
string filename = new simpledateformat("yyyymmddhhmmss").format(new date()) + ".jpg";//照片命名
file out = new file(strimgpath);
if (!out.exists()) {
out.mkdirs();
}
out = new file(strimgpath, filename);
strimgpath = strimgpath + filename;//该照片的绝对路径
uri uri = uri.fromfile(out);
imagecaptureintent.putextra(mediastore.extra_output, uri);
imagecaptureintent.putextra(mediastore.extra_video_quality, 1);
startactivityforresult(imagecaptureintent, result_capture_image);
}
/**
* 拍摄视频
*/
private void videomethod() {
intent intent = new intent(mediastore.action_video_capture);
intent.putextra(mediastore.extra_video_quality, 0);
startactivityforresult(intent, request_code_take_video);
}
/**
* 录音功能
*/
private void soundrecordermethod() {
intent intent = new intent(intent.action_get_content);
intent.settype("audio/amr");
startactivityforresult(intent, result_capture_recorder_sound);
}
/**
* 提示信息
* @param text
* @param duration
*/
private void showtoast(string text, int duration) {
toast.maketext(problemreport.this, text, duration).show();
}
}
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