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Android and setting width and height programmatically in dp units 

final float scale = getContext().getResources().getDisplayMetrics().density;
int pixels = (int) (dps * scale + 0.5f);
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android hide actionbar

public class MainActivity extends Activity { ActionBar actionBar; //声明ActionBar @Override protected void onCreate( Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView( R .layout.activity_main); actionBar = getSupportActionBar(); //得 到ActionBar actionBar.hide(); //隐藏ActionBar } }
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go url encoding

func  QueryUnescape func QueryUnescape (s string ) ( string , error ) QueryUnescape does the inverse transformation of QueryEscape, converting %AB into the byte 0xAB and '+' into ' ' (space). It returns an error if any % is not followed by two hexadecimal digits. func  QueryUnescape func QueryUnescape (s string ) ( string , error ) QueryUnescape does the inverse transformation of QueryEscape, converting %AB into the byte 0xAB and '+' into ' ' (space). It returns an error if any % is not followed by two hexadecimal digits.
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