public class PasswordInputView extends EditText{
private int textLength;
private int borderColor;
private float borderWidth;
private float borderRadius;
private int passwordLength;
private int passwordColor;
private float passwordWidth;
private float passwordRadius;
private Paint passwordPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private Paint borderPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private final int defaultSplitLineWidth = 1;
public PasswordInputView(Context context, AttributeSet attrs) {
super(context, attrs);
final Resources res = getResources();
final int defaultBorderColor = res.getColor(R.color.line_color);
final float defaultBorderWidth = res.getDimension(R.dimen.dimen_1px);
final float defaultBorderRadius = res.getDimension(R.dimen.dimen_6);
final int defaultPasswordLength = 6;
final int defaultPasswordColor = res.getColor(R.color.normal_text_color);
final float defaultPasswordWidth = res.getDimension(R.dimen.dimen_6);
final float defaultPasswordRadius = res.getDimension(R.dimen.dimen_6);
TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.PasswordInputView, 0, 0);
try {
borderColor = a.getColor(R.styleable.PasswordInputView_borderColor, defaultBorderColor);
borderWidth = a.getDimension(R.styleable.PasswordInputView_borderWidth, defaultBorderWidth);
borderRadius = a.getDimension(R.styleable.PasswordInputView_borderRadius, defaultBorderRadius);
passwordLength = a.getInt(R.styleable.PasswordInputView_passwordLength, defaultPasswordLength);
passwordColor = a.getColor(R.styleable.PasswordInputView_passwordColor, defaultPasswordColor);
passwordWidth = a.getDimension(R.styleable.PasswordInputView_passwordWidth, defaultPasswordWidth);
passwordRadius = a.getDimension(R.styleable.PasswordInputView_passwordRadius, defaultPasswordRadius);
} finally {
a.recycle();
}
borderPaint.setStrokeWidth(borderWidth);
borderPaint.setColor(borderColor);
passwordPaint.setStrokeWidth(passwordWidth);
passwordPaint.setStyle(Paint.Style.FILL);
passwordPaint.setColor(passwordColor);
setSingleLine(true);
}
@Override
protected void onDraw(Canvas canvas) {
int width = getWidth();
int height = getHeight();
// 分割线
borderPaint.setColor(borderColor);
borderPaint.setStrokeWidth(defaultSplitLineWidth);
for (int i = 1; i < passwordLength; i++) {
float x = width * i / passwordLength;
canvas.drawLine(x, 0, x, height, borderPaint);
}
// 密码
float cx, cy = height/ 2;
float half = width / passwordLength / 2;
for(int i = 0; i < textLength; i++) {
cx = width * i / passwordLength + half;
canvas.drawCircle(cx, cy, passwordWidth, passwordPaint);
}
}
@Override
protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
super.onTextChanged(text, start, lengthBefore, lengthAfter);
this.textLength = text.toString().length();
invalidate();
}
