Android

Today, I want to achieve the effect of clicking the outside of Popupwindow and clicking the return key popupwindow to automatically close the window. I found it incomplete, fragmented, and inaccurate, So I thought about it myself, tried the effect.

Today, I saw a person writing code. There are several strange methods. As follows: Public boolean onKeyDown (int keyCode, KeyEvent event ){// TODO Auto-generated method stub If (keyCode = KeyEvent. KEYCODE_BACK ){AlertDialog. Builder builder = new

Modify the following code in \ packages \ apps \ Camera \ res \ values \ arrays. xml: @ string/pref_camera_continuous_number_normal @ string/pref_camera_continuous_number_large   40 99 You need to add two items in entries and

Frame layout is one of the simplest layout types to organize controls on the Android user interface. The child view in the frame layout is always drawn to the upper left corner relative to the screen. All views added to this layout are displayed in

In Android, there are two Animation modes: Tween Animation (gradient Animation) and Frame Animation (Frame Animation ). Gradient animation continuously performs image translation (translation, scaling, rotation, etc.) on the objects in the scene to

Body   [Java]Private BroadcastReceiver br = new BroadcastReceiver (){@ OverridePublic void onReceive (Context context, Intent intent ){String action = intent. getAction ();If (action. equals ("com. android. FMRadio. FlightClock ")){// Get the flight

Android version: 2.3.7 _ r1 Linux Kernel version: android-goldfish-2.6.29   Before analyzing the HAL of the Android hardware abstraction layer, let's take a simple example to see how JAVA uses Java Native Interface (JNI) it interacts with C/C ++

Table layout is tableLayout. The table layout manages the UI component in the form of rows and columns. TablelLayout does not need to explicitly declare how many rows and columns are contained, but uses TableRow, and other components to control the

Modify 1: function isChecked ()Private boolean isChecked (String preference, int sim_id ){SharedPreferences prefs = PreferenceManager. getdefasharsharedpreferences (this );If (mIntentPreference. equals (SmsPreferenceActivity.

In Android, there are two ways to take photos. One is to call the camera that comes with the system and then use the photo data it returns. Another method is to use the Camera class and other related classes to implement Camera functions. This

This is a self-developed method. It may be a relatively stupid method. Therefore, not many people have proposed this method to solve the adaptive problem. Although this method has many disadvantages, it is sometimes a good method.First look at the

Public int nextInt ()Returns a pseudo-random uniformly distributed int.   After learning probability theory and probability statistics, we should all know that pseudo-random means pseudo-random, but what does uniformly distributed mean? Let's

  Bitmap bit = Reflect3DImage. skewImage (bit, 50 ); package com.maxway.util; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.Camera; import android.graphics.Canvas; import

1. Source   Many paging components are inherited from ScrollView. to scroll to the bottom of a page, you need to check whether the page is scrolled to the top.   2. Code    

Package cn. testscrollview; import android. OS. bundle; import android. view. motionEvent; import android. view. view; import android. view. view. onTouchListener; import android. widget. scrollView; import android. app. activity;/*** Demo

TextView is a basic Android control. It is indispensable for text. However, in the recent project development process, I found that TextView has many limitations. The most headache is the TextView text layout problem. We all know that the text

The tabhost component that comes with Android is located at the top of the page. If you want it to be located at the bottom of the page, two methods are provided here. Method 1 1. tabcontent and tabs interchange locations 2. Set the attributes of

Some time ago, in order to get the layout of the project, tabhost was used to keep the bottom menu fixed at the bottom, and activityGroup was used as needed. ActivityGroup is very inconvenient to use. It's good if it's okay !!! For future

Android uses RelativeLayout to implement the bottom layout, and sets android: layout_alignParentBottom = "true" to easily implement the bottom layout. However, simple attribute settings for complex la s cannot achieve this effect. For example, the