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https://github.com/kornan/DigitalChangeView/

简介:

这是一个用于实现像支付宝数字动画控件；

Gradle:

compile 'net.kornan.digitalchange:digitalchange:0.0.1'

使用方法:

  <net.kornan.view.DigitalChangeView
        android:id="@+id/text_number"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:defaultValue="100" />

//支持小数和整数
textNumber.setNumber(100);
textNumber.setNumber(100, 3);

textNumber.setDuration(500);
//开始动画
textNumber.start();

PS：app:defaultValue是用来设置默认值。

public class DigitalActivity extends AppCompatActivity implements DigitalChangeView.EndListener {
    private DigitalChangeView textNumber;
    private EditText editInput;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_digtal);
        editInput = (EditText) findViewById(R.id.edit_input);
        textNumber = (DigitalChangeView) findViewById(R.id.text_number);
        textNumber.setOnEndListener(this);
    }

    public void onClickView(View v) {
        try {
            switch (v.getId()) {
                case R.id.btn_submit:
                    String strValue = editInput.getText().toString();
                    if (isInteger(strValue)) {
                        textNumber.setNumber(Integer.parseInt(strValue));
                    } else if (isDecimal(strValue)) {
                        textNumber.setNumber(Float.parseFloat(strValue), 2);
                    } else {
                        return;
                    }
                    textNumber.setDuration(500);
                    textNumber.start();
                    break;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    public static boolean isDecimal(String str) {
        if (str == null || "".equals(str))
            return false;
        java.util.regex.Pattern pattern = Pattern.compile("[0-9]*(\\.?)[0-9]*");
        return pattern.matcher(str).matches();
    }

    public static boolean isInteger(String str) {
        if (str == null)
            return false;
        Pattern pattern = Pattern.compile("[0-9]+");
        return pattern.matcher(str).matches();
    }

    @Override
    public void onEndFinish() {
        Log.d("digital", "onEndFinish");
    }
}