临床试验 data manager 和statician的区别
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发布时间：2022-04-30 18:08
共1个回答
热心网友
时间：2022-06-28 20:59
RingtoneManager是android的铃声管理器。
具体实现代码：
package rocka.media.ringtong;
import java.io.File;
import android.app.Activity;
import android.content.Intent;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Media_RingTongActivity extends Activity {
//定义三个按钮
private Button mRingtongButton;
private Button mAlarmButton;
private Button mNotificationButton;
//定义类型
private static final int RingtongButton=0;
private static final int AlarmButton=1;
private static final int NotificationButton=2;
//铃声文件夹
private String strRingtongFolder="/sdcard/media/ringtones";
private String strAlarmFolder="/sdcard/media/alarms";
private String strNotificationFolder="/sdcard/media/notifications";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mRingtongButton=(Button)findViewById(R.id.myRingtongButton);
mRingtongButton.setOnClickListener(new myRingtongButtonListener());
mAlarmButton=(Button)findViewById(R.id.myAlarmButton);
mAlarmButton.setOnClickListener(new myAlarmButtonListener());
mNotificationButton=(Button)findViewById(R.id.myNotificationButton);
mNotificationButton.setOnClickListener(new myNotificationButtonListener());
}
//设置来电铃声*
private class myRingtongButtonListener implements OnClickListener{
@Override
public void onClick(View v) {
if(isFolder(strRingtongFolder)){
//打开系统铃声设置
Intent intent=new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI, true);
//类型为来电ringtong
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_RINGTONE);
//设置显示的题目
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置来电的铃声");
//当设置完成之后返回到当前的activity
startActivityForResult(intent, RingtongButton);
}
}
}
//设置闹钟铃声*
private class myAlarmButtonListener implements OnClickListener{
@Override
public void onClick(View v) {
if(isFolder(strAlarmFolder)){
Intent intent=new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_ALARM);
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置闹铃铃声");
startActivityForResult(intent, AlarmButton);
}
}
}
//设置通知铃声*
private class myNotificationButtonListener implements OnClickListener{
@Override
public void onClick(View v) {
if(isFolder(strNotificationFolder)){
Intent intent=new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_NOTIFICATION);
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置通知铃声");
startActivityForResult(intent, NotificationButton);
}
}
}
//检查是否存在指定的文件夹，如果不存在就创建
private boolean isFolder(String strFolder){
boolean tmp = false;
File f1 = new File(strFolder);
if (!f1.exists())
{
if (f1.mkdirs())
{
tmp = true;
}
else
{
tmp = false;
}
}
else
{
tmp = true;
}
return tmp;
}
//设置铃声之后的回调函数
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(resultCode!=RESULT_OK){
return;
}
switch(requestCode){
case RingtongButton:
try {
//得到选择的铃声
Uri pickedUri=data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);
//将选择的铃声选择成默认
if(pickedUri!=null){
RingtoneManager.setActualDefaultRingtoneUri(Media_RingTongActivity.this, RingtoneManager.TYPE_RINGTONE, pickedUri);
}
} catch (Exception e) {
e.printStackTrace();
}
break;
case AlarmButton:
try {
//得到选择的铃声
Uri pickedUri=data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);
//将我们选择的铃声选择成默认
if(pickedUri!=null){
RingtoneManager.setActualDefaultRingtoneUri(Media_RingTongActivity.this, RingtoneManager.TYPE_ALARM, pickedUri);
}
} catch (Exception e) {
e.printStackTrace();
}
break;
case NotificationButton:
try {
//得到选择的铃声
pickedUri=data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);
//将选择的铃声选择成默认
if(pickedUri!=null){
RingtoneManager.setActualDefaultRingtoneUri(Media_RingTongActivity.this, RingtoneManager.TYPE_NOTIFICATION, pickedUri);
}
} catch (Exception e) {
e.printStackTrace();
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
}
代码说明：
布局文件就是三个按钮。
2.在真机测试了一下，可以运行，在模拟器测试要注意了，每次把音频文件push到sdcard中得时候,必须重启模拟器,模拟器才会应用设置,不然是检索不到的。
3.系统的原始声音存放在/system/media/audio/文件中 。
4.最后一点不要忘记给应用程序加权限了：
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<uses-permission android:name="android.permission.WRITE_SETTINGS"/>
