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private final Paint pFont = new Paint();
Rect rect = new Rect();
pFont.getTextBounds("小", 0, 1, rect);
Log.v(TAG, "height:"+rect.height()+"width:"+rect.width());
Paint mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mTextPaint.setColor(Color.WHITE);
// Define the string.
String displayText = “Hello World!”;
// Measure the width of the text string.
float textWidth = mTextPaint.measureText(displayText);