各种通用方法

把资产目录里面的数据库写到SD卡上面

try {
InputStream is = getResources().getAssets().open("antivirus.db");
File file = new File(Environment.getExternalStorageDirectory(),
"antivirus.db");
FileOutputStream fos = new FileOutputStream(file);
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1) {
fos.write(buffer, 0, len);
}
fos.flush();
fos.close();
is.close();
} catch (IOException e) {

e.printStackTrace();
}

点击后退按钮，弹出对话框，然后杀死自己

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
new AlertDialog.Builder(MainActivity.this)
.setTitle("真的要离开？")
.setMessage("你确定要离开")
.setPositiveButton("确定",
new DialogInterface.OnClickListener({
public void onClick(DialogInterface dialog,int which) {
App app = (App) getApplication();
AppManager.getAppManager().AppExit();
//杀死自己
android.os.Process.killProcess(android.os.Process.myPid());
}
}).show();

}
return true;
}

子线程里面需要用到toast的标准用法

Looper.prepare();
Toast.makeText(getApplicationContext(), "备份完成", 1).show();
Looper.loop();

自定义toast

public static void  showMyToast(Context context, int icon , String text){
Toast toast = new Toast(context);
View view = View.inflate(context, R.layout.mytoast, null);
TextView tv_toast = (TextView) view.findViewById(R.id.tv_toast);
ImageView iv_toast = (ImageView) view.findViewById(R.id.iv_toast);
tv_toast.setText(text);
iv_toast.setImageResource(icon);

toast.setView(view);
toast.setDuration(Toast.LENGTH_SHORT);
toast.show();
}

监听短信SMS

<!--  配置一个短信的广播接收者，接收短信事件 -->
<receiver android:name="com.xukunn.smsreceiver.SmsBroadcastReceiver">
<intent-filter android:priority="1000">
<action android:name="android.provider.Telephony.SMS_RECEIVED"/> //4.2开始不提供这个API了,不能Alt+/提示出来,只能手动去添加
</intent-filter>
</receiver>

public class SmsBroadcastReceiver extends BroadcastReceiver {

//pdu是ieee这个组织定义的短信的数据格式规范(一大堆的byte[],分别代表短信的类型,短信的接收时间,短信的发件人,服务短信号码) 有序广播。
@Override
public void onReceive(Context context, Intent intent) {
System.out.println("发现新的，短信到来了。。");
//取出来短信的数据
Object[] objs = (Object[]) intent.getExtras().get("pdus");//短信数组。固定写法!!!!!!
for(Object obj : objs){
SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) obj);//静态方法:把一组pdu类型的数据转成Message对象
String body = smsMessage.getMessageBody();//得到短信内容
String sender = smsMessage.getOriginatingAddress();//得到发件人地址
System.out.println("body:"+body);
System.out.println("sender:"+sender);
if("5556".equals(sender)){
abortBroadcast();
}
}
}
}

把View对象挂载到窗体上面

public void showLoaction(String address) {
WindowManager.LayoutParams params = new WindowManager.LayoutParams();
params.height = WindowManager.LayoutParams.WRAP_CONTENT;
params.width = WindowManager.LayoutParams.WRAP_CONTENT;
params.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
params.format = PixelFormat.TRANSLUCENT;
params.type = WindowManager.LayoutParams.TYPE_TOAST;
params.setTitle("Toast");
TextView view = new TextView(this);
view.setText(address);
WindowManager windowManager =  (WindowManager) this.getSystemService(WINDOW_SERVICE);
windowManager.addView(view, params);
}

自定义title

public class CustomtitleActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/*       //1.隐藏掉系统的标题栏
//2.自定义的界面 上面显示出来的样式跟title类似
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);*/

//第二种方式自定义title
//告诉系统用自定义的title
boolean flag = requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);

setContentView(R.layout.main);

if(flag){
//设置系统的title为 自定义的那个资源文件
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);
}
}
}

自定义dialog

<style name="CustomDialog" parent="android:style/Theme.Dialog">

<!-- 背景颜色及透明程度 -->
<item name="android:windowBackground">@android:color/transparent</item>
<!-- 是否有标题 -->
<item name="android:windowNoTitle">true</item>
<!-- 是否浮现在activity之上 -->
<item name="android:windowIsFloating">true</item>
<!-- 是否模糊 -->
<item name="android:backgroundDimEnabled">true</item>
<item name="android:windowFrame">@null</item>
</style>

自定义Notification

public void click(View view){
//1.创建notification 的管理器
NotificationManager manager = (NotificationManager) this.getSystemService(NOTIFICATION_SERVICE);
//2 .创建notification的实例
Notification notification = new Notification();
notification.flags = Notification.FLAG_AUTO_CANCEL;
notification.icon = R.drawable.ic_launcher;
notification.tickerText="自定义notification";
//notification.contentView;
//远程的view  我们的view对象 是要显示在另外一个进程里面 另外一个程序里面 所以就需要一个remote  view
RemoteViews rv = new RemoteViews(getPackageName(), R.layout.custom_notification);
rv.setTextViewText(R.id.textView1, "textview 自定义notification");
rv.setProgressBar(R.id.progressBar1, 100, 50, false);

notification.contentView = rv;
Intent intent = new Intent(this,DemoActivity.class);
PendingIntent  pendingIntent = PendingIntent.getActivity(this, 0, intent, Intent.FLAG_ACTIVITY_NEW_TASK);
notification.contentIntent = pendingIntent;

manager.notify(2, notification);

}

给图片加边框

/**
* 添加图片边框
* @param bmp
* @return
*/
public static Bitmap addFrame(Bitmap bmp,int borderColor,int borderSize)
{
Bitmap bmpWithBorder = Bitmap.createBitmap(bmp.getWidth() + borderSize
* 2, bmp.getHeight() + borderSize * 2, bmp.getConfig());
Canvas canvas = new Canvas(bmpWithBorder);
canvas.drawColor(borderColor);//边框颜色
canvas.drawBitmap(bmp, borderSize, borderSize, null);
return bmpWithBorder;
}

获取各种系统服务

获取位置的服务
locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setCostAllowed(true); //设置是否允许产生费用
criteria.setSpeedRequired(true);//设置是否对速度敏感
criteria.setAltitudeRequired(true);//设置是否海拔敏感
criteria.setAccuracy(Criteria.ACCURACY_FINE); //设置准确的定位 coarse 大体的位置
criteria.setPowerRequirement(Criteria.POWER_MEDIUM);
String provider = locationManager.getBestProvider(criteria, true);
//获取手机位置信息的变化
locationManager.requestLocationUpdates(provider, 60000, 100, getListenerInstance());
获得超级管理员
DevicePolicyManager  manager = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
manager.wipeData(0);
//获取系统打电话的服务
TelephonyManager manager = (TelephonyManager) getSystemService(this.TELEPHONY_SERVICE);
//获取系统窗体服务
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);

调节屏幕亮度

public void setBrightness(int level) {
ContentResolver cr = getContentResolver();
Settings.System.putInt(cr, "screen_brightness", level);
Window window = getWindow();
WindowManager.LayoutParams attributes = window.getAttributes();
float flevel = level;
attributes.screenBrightness = flevel / 255;
getWindow().setAttributes(attributes);
}

获取mac地址

1、<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
2、private String getLocalMacAddress() {
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = wifi.getConnectionInfo();
return info.getMacAddress();
}

获取SD卡状态

/** 获取存储卡路径 */
File sdcardDir=Environment.getExternalStorageDirectory();
/** StatFs 看文件系统空间使用情况 */
StatFs statFs=new StatFs(sdcardDir.getPath());
/** Block 的 size*/
Long blockSize=statFs.getBlockSize();
/** 总 Block 数量 */
Long totalBlocks=statFs.getBlockCount();
/** 已使用的 Block 数量 */
Long availableBlocks=statFs.getAvailableBlocks();

禁用home键

先禁止Home键，再在onKeyDown里处理按键值，点击Home键的时候就把程序关闭，或者随你怎么处理。

@Override

public boolean onKeyDown(int keyCode, KeyEvent event)

{ // TODO Auto-generated method stub

if(KeyEvent.KEYCODE_HOME==keyCode)

android.os.Process.killProcess(android.os.Process.myPid());

return super.onKeyDown(keyCode, event);

}

@Override

public void onAttachedToWindow()

{
this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
super.onAttachedToWindow();

}

加权限禁止Home键

<uses-permission android:name="android.permission.DISABLE_KEYGUARD"></uses-permission>

开机启动

public class StartupReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
Intent startupintent = new Intent(context,StrongTracks.class);
startupintent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(startupintent);
}

}
2)<receiver
android:name=".StartupReceiver">
<intent-filter>
<!-- 系统启动完成后会调用 -->
<action
android:name="android.intent.action.BOOT_COMPLETED">
</action>
</intent-filter>
</receiver>

获取对话框的位置,挪动

window =dialog.getWindow();//
WindowManager.LayoutParams wl = window.getAttributes();
wl.x = x;//这两句设置了对话框的位置．0为中间
wl.y =y;
wl.width =w;
wl.height =h;
wl.alpha =0.6f;// 这句设置了对话框的透明度

//修改对话框的位置
Window mWindow = dialog.getWindow();
WindowManager.LayoutParams lp = mWindow.getAttributes();
lp.x = 10;   //新位置X坐标
lp.y = -100; //新位置Y坐标
dialog.onWindowAttributesChanged(lp);

获取各种窗体高度

//取得窗口属性
getWindowManager().getDefaultDisplay().getMetrics(dm);

//窗口的宽度
int screenWidth = dm.widthPixels;
//窗口高度
int screenHeight = dm.heightPixels;
二、获取状态栏高度
decorView是window中的最顶层view，可以从window中获取到decorView，
然后decorView有个getWindowVisibleDisplayFrame方法可以获取到程序显示的区域，包括标题栏，但不包括状态栏。
于是，我们就可以算出状态栏的高度了。
view plain

Rect frame = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
int statusBarHeight = frame.top;

三、获取标题栏高度
getWindow().findViewById(Window.ID_ANDROID_CONTENT)这个方法获取到的view就是程序不包括标题栏的部分，然后就可以知道标题栏的高度了。
view plain

int contentTop = getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();
//statusBarHeight是上面所求的状态栏的高度
int titleBarHeight = contentTop - statusBarHeight

Android设置apn

ContentValues values = new ContentValues();
values.put(NAME, "CMCC cmwap");
values.put(APN, "cmwap");
values.put(PROXY, "10.0.0.172");

values.put(PORT, "80");
values.put(MMSPROXY, "");
values.put(MMSPORT, "");
values.put(USER, "");
values.put(SERVER, "");
values.put(PASSWORD, "");
values.put(MMSC, "");
values.put(TYPE, "");
values.put(MCC, "460");
values.put(MNC, "00");
values.put(NUMERIC, "46000");
reURI = getContentResolver().insert(Uri.parse("content://telephony/carriers"), values);

//首选接入点"content://telephony/carriers/preferapn"

发送指令

out = process.getOutputStream();
out.write(("am start -a android.intent.action.VIEW -n com.android.browser/com.android.browser.BrowserActivity\n").getBytes());
out.flush();

InputStream in = process.getInputStream();
BufferedReader re = new BufferedReader(new InputStreamReader(in));
String line = null;
while((line = re.readLine()) != null) {
Log.d("conio","[result]"+line);
}