Android 的音量控制代码
本来希望能够控制 电话 铃声和 短信通知铃声，分开设置的。但看上去android的 api没 有单独控制通知铃声大小的了。 stream_ring 和 stream_notification 是一样的。 文档adjustStreamVolume的说明确实没有提到可以设置stream_notification 的。
android studio 的apk编译， 需要通过 build -》 Generate Signed Apk 生成。 先创建一个keystore 文件，随便填个ca机构就可以了，android 只是用来保证作者的唯一 而已。 防止第3方修改app又不知道。 然后一步步下一步最后就生成apk了。没有签名的 apk在 手机上没法 安装成功了。
SettingActivity.java
package heath.fullvolumecontrol;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
//import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
import android.media.AudioManager;
import android.content.Context;
import android.widget.Button;
public class SettingActivity extends ActionBarActivity {
private AudioManager myAudioManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_setting);
// if (savedInstanceState == null) {
// getSupportFragmentManager().beginTransaction()
// .add(R.id.container, new PlaceholderFragment())
// .commit();
// }
//final Button VolumeRing = (Button)findViewById(R.id.button_ring);
//VolumeRing.setOnClickListener(new View.OnClickListener() {
// public void onClick(View v) {
// // Perform action on click
// }
// });
myAudioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_setting, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_exit) {
// 閫?鍑哄簲鐢?
android.os.Process.killProcess(android.os.Process.myPid());
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
/*
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_setting, container, false);
return rootView;
}
}
*/
public void AdjustVolumeRing(View view) {
myAudioManager.adjustStreamVolume(
AudioManager.STREAM_RING, // STREAM_VOICE_CALL, STREAM_SYSTEM, STREAM_RING, STREAM_MUSIC or STREAM_ALARM
AudioManager.ADJUST_SAME, // ADJUST_LOWER, ADJUST_RAISE
AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND);
}
public void AdjustVolumeNotification(View view) {
myAudioManager.adjustStreamVolume(
AudioManager.STREAM_NOTIFICATION, // STREAM_VOICE_CALL, STREAM_SYSTEM, STREAM_RING, STREAM_MUSIC or STREAM_ALARM
AudioManager.ADJUST_SAME, //ADJUST_LOWER, ADJUST_RAISE
AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND);
// myAudioManager.setStreamVolume(
// AudioManager.STREAM_NOTIFICATION, // STREAM_VOICE_CALL, STREAM_SYSTEM, STREAM_RING, STREAM_MUSIC or STREAM_ALARM
// myAudioManager.getStreamVolume(AudioManager.STREAM_NOTIFICATION),
// AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND);
}
public void AdjustVolumeMusic(View view) {
myAudioManager.adjustStreamVolume(
AudioManager.STREAM_MUSIC, // STREAM_VOICE_CALL, STREAM_SYSTEM, STREAM_RING, STREAM_MUSIC or STREAM_ALARM
AudioManager.ADJUST_SAME, //ADJUST_LOWER, ADJUST_RAISE
AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND);
}
public void AdjustVolumeSystem(View view) {
myAudioManager.adjustStreamVolume(
AudioManager.STREAM_SYSTEM, // STREAM_VOICE_CALL, STREAM_SYSTEM, STREAM_RING, STREAM_MUSIC or STREAM_ALARM
AudioManager.ADJUST_SAME, //ADJUST_LOWER, ADJUST_RAISE
AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND);
}
public void AdjustVolumeAlarm(View view) {
myAudioManager.adjustStreamVolume(
AudioManager.STREAM_ALARM, // STREAM_VOICE_CALL, STREAM_SYSTEM, STREAM_RING, STREAM_MUSIC or STREAM_ALARM
AudioManager.ADJUST_SAME, //ADJUST_LOWER, ADJUST_RAISE
AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND);
}
public void AdjustVolumeVoiceCall(View view) {
myAudioManager.adjustStreamVolume(
AudioManager.STREAM_VOICE_CALL, // STREAM_VOICE_CALL, STREAM_SYSTEM, STREAM_RING, STREAM_MUSIC or STREAM_ALARM
AudioManager.ADJUST_SAME, //ADJUST_LOWER, ADJUST_RAISE
AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND);
}
}
activity_setting.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".SettingActivity">
<TextView android:text="@string/hello_world" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textView" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="铃声音量"
android:id="@+id/button_ring"
android:layout_below="@+id/textView"
android:layout_alignParentStart="true"
android:onClick="AdjustVolumeRing"
android:nestedScrollingEnabled="false" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="通知音量"
android:id="@+id/button_notification"
android:layout_below="@+id/button_ring"
android:layout_alignParentStart="true"
android:onClick="AdjustVolumeNotification" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="音乐音量"
android:id="@+id/button_music"
android:layout_below="@+id/button_notification"
android:layout_alignParentStart="true"
android:onClick="AdjustVolumeMusic" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="警告音量"
android:id="@+id/button_alarm"
android:layout_below="@+id/button_music"
android:layout_alignParentStart="true"
android:onClick="AdjustVolumeAlarm" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="系统音量"
android:id="@+id/button_system"
android:layout_below="@+id/button_alarm"
android:layout_alignParentStart="true"
android:onClick="AdjustVolumeSystem" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="通话音量"
android:id="@+id/button_voicecall"
android:layout_below="@+id/button_system"
android:layout_alignParentStart="true"
android:onClick="AdjustVolumeVoiceCall" />
</RelativeLayout>