Android常用代码合集

edwinningb 2012-09-18

展开全文

活动管理器
权限 <uses-permission android:name="android.permission.GET_TASKS"/>
ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);

警报管理器
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

音频管理器
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

剪贴板管理器
ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);

连接管理器
权限 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVIT

输入法管理器
InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_S)

键盘管理器
KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);

布局解压器管理器
LayoutInflater layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);

位置管理器
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

通知管理器
代码 NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATIO)

电源管理器
权限 <uses-permission android:name="android.permission.DEVICE_POWER"/>
PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);

搜索管理器
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);

传感器管理器
SensorManager sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);

电话管理器
权限 <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

振动器
权限 <uses-permission android:name="android.permission.VIBRATE"/>
Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);

墙纸
权限 <uses-permission android:name="android.permission.SET_WALLPAPER"/>
WallpaperService wallpaperService = (WallpaperService) getSystemService(Context.WALLPAPER_SERVICE);

Wi-Fi管理器
权限 <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
代码 WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);

窗口管理器
代码 WindowManager windowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);

获取用户android手机机器码和手机号
TelephonyManager tm = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
　　String imei = tm.getDeviceId();//获取机器码
　　String tel = tm.getLine1Number();//获取手机号

设置为横屏
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

无标题栏、全屏
//无标题栏
requestWindowFeature(Window.FEATURE_NO_TITLE);  //要在setcontentView之前哦
    //全屏模式
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);

获取屏幕宽高
DisplayMetrics dm = new DisplayMetrics();
//获取窗口属性
getWindowManager().getDefaultDisplay().getMetrics(dm);
int screenWidth = dm.widthPixels;//320
int screenHeight = dm.heightPixels;//480

使用样式表
在 res/values下面新建一个XML文件style.xml ，然后写下如下代码
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="style1">
<item name="android:textSize">18sp</item>
<item name="android:textColor">#EC9237</item>
</style>
<style name="style2"><item name="android:textSize">10sp</item>
<item name="android:textColor">#FF9237</item>
</style>
</resources>
使用：
<TextView
style="@style/style1"//调用style
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="样式1"
android:id="@+id/Tv1">
</TextView>

使用布局文件，切换布局
建立两个布局文件
在事件里面写代码
@Override
public void onClick(View v) {
helllo.this.setContentView(R.layout.layout2);
Button tempBtn=(Button)findViewById(R.id.btn_click1);
tempBtn.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
helllo.this.setContentView(R.layout.xxx);
}
});

=========================================================================
//Intent用法
Intent it = new Intent(Activity.Main.this, Activity2.class);
startActivity(it);

//向下一个Activity传递数据（使用Bundle和Intent.putExtras）
Intent it = new Intent(Activity.Main.this, Activity2.class);
Bundle bundle=new Bundle();
bundle.putString("name", "This is from MainActivity!");
it.putExtras(bundle); // it.putExtra(“test”, "shuju”);
startActivity(it); // startActivityForResult(it,REQUEST_CODE);
对于数据的获取可以采用：
Bundle bundle=getIntent().getExtras();
String name=bundle.getString("name");

//向上一个Activity返回结果（使用setResult，针对startActivityForResult(it,REQUEST_CODE)启动的Activity）
Intent intent=getIntent();
Bundle bundle2=new Bundle();
bundle2.putString("name", "This is from ShowMsg!");
intent.putExtras(bundle2);
setResult(RESULT_OK, intent);

//回调上一个Activity的结果处理函数（onActivityResult）
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (requestCode==REQUEST_CODE){
if(resultCode==RESULT_CANCELED)
setTitle("cancle");
else if (resultCode==RESULT_OK) {
String temp=null;
Bundle bundle=data.getExtras();
if(bundle!=null) temp=bundle.getString("name");
setTitle(temp);
}
}
}

//显示网页
Uri uri = Uri.parse("http://google.com");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);

//显示地图
Uri uri = Uri.parse("geo:38.899533,-77.036476");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//其他 geo URI 範例
//geo:latitude,longitude
//geo:latitude,longitude?z=zoom
//geo:0,0?q=my+street+address
//geo:0,0?q=business+near+city
//google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapZoom

//路径规划
Uri uri = Uri.parse("http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where startLat, startLng, endLat, endLng are a long with 6 decimals like: 50.123456

//打电话
//叫出拨号程序
Uri uri = Uri.parse("tel:0800000123");
Intent it = new Intent(Intent.ACTION_DIAL, uri);
startActivity(it);
//直接打电话出去
Uri uri = Uri.parse("tel:0800000123");
Intent it = new Intent(Intent.ACTION_CALL, uri);
startActivity(it);
//用這個，要在 AndroidManifest.xml 中，加上//<uses-permission id="android.permission.CALL_PHONE" />

//传送SMS/MMS
//调用短信程序
Intent it = new Intent(Intent.ACTION_VIEW, uri);
it.putExtra("sms_body", "The SMS text");
it.setType("vnd.android-dir/mms-sms");
startActivity(it);

//传送消息
Uri uri = Uri.parse("smsto://0800000123");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
it.putExtra("sms_body", "The SMS text");
startActivity(it);

//传送 MMS
Uri uri = Uri.parse("content://media/external/images/media/23");
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra("sms_body", "some text");
it.putExtra(Intent.EXTRA_STREAM, uri);
it.setType("image/png");
startActivity(it);

//传送Email
Uri uri = Uri.parse("mailto:xxx@abc.com");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
startActivity(it);
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_EMAIL, "me@abc.com");
it.putExtra(Intent.EXTRA_TEXT, "The email body text");
it.setType("text/plain");
startActivity(Intent.createChooser(it, "Choose Email Client"));

Intent it=new Intent(Intent.ACTION_SEND);
String[] tos={"me@abc.com"};
String[] ccs={"you@abc.com"};
it.putExtra(Intent.EXTRA_EMAIL, tos);
it.putExtra(Intent.EXTRA_CC, ccs);
it.putExtra(Intent.EXTRA_TEXT, "The email body text");
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
it.setType("message/rfc822");
startActivity(Intent.createChooser(it, "Choose Email Client"));

//传送附件
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/mysong.mp3");
sendIntent.setType("audio/mp3");
startActivity(Intent.createChooser(it, "Choose Email Client"));

//播放多媒体
Uri uri = Uri.parse("file:///sdcard/song.mp3");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
it.setType("audio/mp3");
startActivity(it);
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);

//Market 相关
//寻找某个应用
Uri uri = Uri.parse("market://search?q=pname:pkg_name");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where pkg_name is the full package path for an application

//显示某个应用的相关信息
Uri uri = Uri.parse("market://details?id=app_id");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where app_id is the application ID, find the ID
//by clicking on your application on Market home
//page, and notice the ID from the address bar

//Uninstall 应用程序
Uri uri = Uri.fromParts("package", strPackageName, null);
Intent it = new Intent(Intent.ACTION_DELETE, uri);
startActivity(it);
==============================================================================

//调用浏览器载入某网址
Uri uri = Uri.parse("http://www.baidu.com");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);

//Broadcast接收系统广播的intent 监控应用程序包的安装删除
public class getBroadcast extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
                  if(Intent.ACTION_PACKAGE_ADDED.equals(intent.getAction())){
                    Toast.makeText(context, "有应用被添加", Toast.LENGTH_LONG).show();
            }
                else  if(Intent.ACTION_PACKAGE_REMOVED.equals(intent.getAction())){
                    Toast.makeText(context, "有应用被删除", Toast.LENGTH_LONG).show();
            }
                else  if(Intent.ACTION_PACKAGE_REPLACED.equals(intent.getAction())){
                    Toast.makeText(context, "有应用被替换", Toast.LENGTH_LONG).show();
            }
                else  if(Intent.ACTION_CAMERA_BUTTON.equals(intent.getAction())){
                    Toast.makeText(context, "按键", Toast.LENGTH_LONG).show();
            }
        }
}
//需要声明的权限如下AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas./apk/res/android"
      package="zy.Broadcast"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".Broadcast"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
      <receiver android:name="getBroadcast" android:enabled="true" >
         <intent-filter>
             <action android:name="android.intent.action.PACKAGE_ADDED"></action>
             
             <action android:name="android.intent.action.PACKAGE_REMOVED"></action>
             <action android:name="android.intent.action.PACKAGE_REPLACED"></action>
             
           
               <action android:name="android.intent.action.CAMERA_BUTTON"></action>
               <data android:scheme="package"></data>
              </intent-filter>
</receiver>
    </application>
    <uses-sdk android:minSdkVersion="3" />
</manifest>

//使用Toast输出一个字符串
public void DisplayToast(String str)
        {
      Toast.makeText(this,str,Toast.LENGTH_SHORT).show();
        }

//把一个字符串写进文件
public void writefile(String str,String path )
        {
            File file;
            FileOutputStream out;
             try {
                 //创建文件
                 file = new File(path);
                 file.createNewFile();
                 //打开文件file的OutputStream
                 out = new FileOutputStream(file);
                 String infoToWrite = str;
                 //将字符串转换成byte数组写入文件
                 out.write(infoToWrite.getBytes());
                 //关闭文件file的OutputStream
                 out.close();
             } catch (IOException e) {
                 //将出错信息打印到Logcat
              DisplayToast(e.toString());
             }
        }

//把文件内容读出到一个字符串
public String getinfo(String path)
        {
            File file;
            String str="";
            FileInputStream in;
         try{
            //打开文件file的InputStream
             file = new File(path);
             in = new FileInputStream(file);
             //将文件内容全部读入到byte数组
             int length = (int)file.length();
             byte[] temp = new byte[length];
             in.read(temp, 0, length);
             //将byte数组用UTF-8编码并存入display字符串中
             str =  EncodingUtils.getString(temp,TEXT_ENCODING);
             //关闭文件file的InputStream
             in.close();
         }
         catch (IOException e) {
          DisplayToast(e.toString());
         }
         return str;
        }

//调用Android installer 安装和卸载程序
Intent intent = new Intent(Intent.ACTION_VIEW);
       intent.setDataAndType(Uri.fromFile(new File("/sdcard/WorldCupTimer.apk")), "application/vnd.android.package-archive");
       startActivity(intent); //安装程序
       Uri packageURI = Uri.parse("package:zy.dnh");
       Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);
       startActivity(uninstallIntent);//正常卸载程序

//结束某个进程
activityManager.restartPackage(packageName);

//设置默认来电铃声
public void setMyRingtone()
    {
   File k = new File("/sdcard/Shall We Talk.mp3"); // 设置歌曲路径
    ContentValues values = new ContentValues();
    values.put(MediaStore.MediaColumns.DATA, k.getAbsolutePath());
    values.put(MediaStore.MediaColumns.TITLE, "Shall We Talk");
    values.put(MediaStore.MediaColumns.SIZE, 8474325);
    values.put(MediaStore.MediaColumns.MIME_TYPE, "audio/mp3");
    values.put(MediaStore.Audio.Media.ARTIST, "Madonna");
    values.put(MediaStore.Audio.Media.DURATION, 230);
    values.put(MediaStore.Audio.Media.IS_RINGTONE, true);
    values.put(MediaStore.Audio.Media.IS_NOTIFICATION, false);
    values.put(MediaStore.Audio.Media.IS_ALARM, false);
    values.put(MediaStore.Audio.Media.IS_MUSIC, false);
    // Insert it into the database
    Uri uri = MediaStore.Audio.Media.getContentUriForPath(k.getAbsolutePath());
    Uri newUri = this.getContentResolver().insert(uri, values);
    RingtoneManager.setActualDefaultRingtoneUri(this, RingtoneManager.TYPE_RINGTONE, newUri);
    ;}
需要的权限
<uses-permission android:name="android.permission.WRITE_SETTINGS"></uses-permission>