Android修改媒体音量以及修改屏幕亮度
Android修改手机属性
- Android音频相关
-
- 音量类型
- 获取当前媒体音量
- 获取最大媒体音量
- 设置媒体音量
- Android屏幕亮度相关
-
- 获取当前屏幕亮度
- 获取系统亮度模式
- 获取最大屏幕亮度
- 设置屏幕亮度
-
- 带权限返回值
- SystemServiceUtil类
Android音频相关
音量类型
铃声：STREAM_RING
闹钟：STREAM_ALARM
系统：STREAM_SYSTEM
通话：STREAM_VOICE_CALL
通知：STREAM_NOTIFICATION
媒体音量：STREAM_MUSIC
获取当前媒体音量
// 获取当前媒体音量
public static int getCurrentVolume(Context context){
if (context == null){
return -1;
}
AudioManager audioManager = (AudioManager)context.getSystemService(context.AUDIO_SERVICE);
return audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
}
获取最大媒体音量
// 获取最大媒体音量
public static int getMaxVolume(Context context){
if (context == null){
return -1;
}
AudioManager audioManager = (AudioManager)context.getSystemService(context.AUDIO_SERVICE);
return audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
}
设置媒体音量
// 设置媒体音量
public static void setVolume(Context context){
if (context == null){
return;
}
AudioManager audioManager = (AudioManager)context.getSystemService(context.AUDIO_SERVICE);
int maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
/**
* setStreamVolume
* streamType：音量类型
* index：需设置的音量值
* flags：附加参数：
* AudioManager.FLAG_SHOW_VIBRATE_HINT：震动提示
* AudioManager.FLAG_SHOW_SILENT_HINT：静音提示
* AudioManager.FLAG_PLAY_SOUND：调整音量时播放声音
* AudioManager.FLAG_SHOW_UI：调整音量时显示系统音量进度条；0则不显示
*/
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,((int)maxVolume / 2 + 1),0);
}
Android屏幕亮度相关
获取当前屏幕亮度
// 获取当前屏幕亮度
public static int getCurrentScreenBrightness(Context context) throws Settings.SettingNotFoundException {
if (context == null){
return -1;
}
return Settings.System.getInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS);
}
获取系统亮度模式
// 获取系统亮度模式(自动亮度：1 手动亮度：0)
public static int getBrightnessMode(Context context) throws Settings.SettingNotFoundException {
if (context == null){
return -1;
}
return Settings.System.getInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE);
}
获取最大屏幕亮度
// 获取最大屏幕亮度
public static int getMaxScreenBrightness(Context context) throws Settings.SettingNotFoundException {
if (context == null){
return -1;
}
int brightnessSettingMaximumId = context.getResources().getIdentifier("config_screenBrightnessSettingMaximum", "integer", "android");
return context.getResources().getInteger(brightnessSettingMaximumId);
}
设置屏幕亮度
需要在AndroidManifest.xml中添加此权限
<uses-permission android:name="android.permission.WRITE_SETTINGS" tools:ignore="ProtectedPermissions" />
// 设置屏幕亮度
@RequiresApi(api = Build.VERSION_CODES.M)
public static void setScreenBrightness(Context context){
//判断是否有系统设置权限
if (Settings.System.canWrite(context)){
Settings.System.putInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, 0);//设置手动亮度
int brightnessSettingMaximumId = context.getResources().getIdentifier("config_screenBrightnessSettingMaximum", "integer", "android");
int brightnessSettingMaximum = context.getResources().getInteger(brightnessSettingMaximumId);
Settings.System.putInt(context.getContentResolver(),Settings.System.SCREEN_BRIGHTNESS, brightnessSettingMaximum);//修改系统的亮度
}else {
// 具体操作...
}
}
带权限返回值
package cn.com.lttc.loginui;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.Settings;
import android.view.View;
import android.widget.Toast;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import cn.com.lttc.loginui.util.SystemServiceUtil;
public class TextActivity extends AppCompatActivity {
public static final int REQUEST_CODE = 100;
@RequiresApi(api = Build.VERSION_CODES.M)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_register_step_one);
setScreenBrightness();
}
// 设置屏幕亮度
@RequiresApi(api = Build.VERSION_CODES.M)
public void setScreenBrightness(){
if (Settings.System.canWrite(this)){
Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, 0);//设置手动亮度
int brightnessSettingMaximumId = getResources().getIdentifier("config_screenBrightnessSettingMaximum", "integer", "android");
int brightnessSettingMaximum = getResources().getInteger(brightnessSettingMaximumId);//获取系统亮度最大值
Settings.System.putInt(getContentResolver(),Settings.System.SCREEN_BRIGHTNESS, brightnessSettingMaximum);//修改系统的亮度
}else {
// 进入设置页面手动添加权限
Intent intent = new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS, Uri.parse("package:" + getPackageName()));
startActivityForResult(intent,REQUEST_CODE);
}
}
@RequiresApi(api = Build.VERSION_CODES.M)
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE) {
if (Settings.System.canWrite(this)) {
setScreenBrightness();
} else {
Toast.makeText(this, "拒绝了权限", Toast.LENGTH_SHORT).show();
}
}
}
}
SystemServiceUtil类
package cn.com.lttc.loginui.util;
import android.content.Context;
import android.media.AudioManager;
import android.os.Build;
import android.provider.Settings;
import androidx.annotation.RequiresApi;
public class SystemServiceUtil {
// 获取当前媒体音量
public static int getCurrentVolume(Context context){
if (context == null){
return -1;
}
AudioManager audioManager = (AudioManager)context.getSystemService(context.AUDIO_SERVICE);//获取音频管理器
return audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
}
// 获取最大媒体音量
public static int getMaxVolume(Context context){
if (context == null){
return -1;
}
AudioManager audioManager = (AudioManager)context.getSystemService(context.AUDIO_SERVICE);
return audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
}
// 设置媒体音量
public static void setVolume(Context context){
if (context == null){
return;
}
AudioManager audioManager = (AudioManager)context.getSystemService(context.AUDIO_SERVICE);
int maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
/**
* setStreamVolume
* streamType：音量类型
* index：需设置的音量值
* flags：附加参数：
* AudioManager.FLAG_SHOW_VIBRATE_HINT：震动提示
* AudioManager.FLAG_SHOW_SILENT_HINT：静音提示
* AudioManager.FLAG_PLAY_SOUND：调整音量时播放声音
* AudioManager.FLAG_SHOW_UI：调整音量时显示系统音量进度条；0则不显示
*/
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,((int)maxVolume / 2 + 1),0);
}
// 获取当前屏幕亮度
public static int getCurrentScreenBrightness(Context context) throws Settings.SettingNotFoundException {
if (context == null){
return -1;
}
return Settings.System.getInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS);
}
// 获取系统亮度模式(自动亮度：1 手动亮度：0)
public static int getBrightnessMode(Context context) throws Settings.SettingNotFoundException {
if (context == null){
return -1;
}
return Settings.System.getInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE);
}
// 获取最大屏幕亮度
public static int getMaxScreenBrightness(Context context) throws Settings.SettingNotFoundException {
if (context == null){
return -1;
}
int brightnessSettingMaximumId = context.getResources().getIdentifier("config_screenBrightnessSettingMaximum", "integer", "android");
return context.getResources().getInteger(brightnessSettingMaximumId);
}
// 设置屏幕亮度
@RequiresApi(api = Build.VERSION_CODES.M)
public static void setScreenBrightness(Context context){
if (Settings.System.canWrite(context)){
Settings.System.putInt(context.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, 0);//设置手动亮度
int brightnessSettingMaximumId = context.getResources().getIdentifier("config_screenBrightnessSettingMaximum", "integer", "android");
int brightnessSettingMaximum = context.getResources().getInteger(brightnessSettingMaximumId);//获取系统亮度最大值
Settings.System.putInt(context.getContentResolver(),Settings.System.SCREEN_BRIGHTNESS, brightnessSettingMaximum);//修改系统的亮度
}
}
}