如何在Android中的编辑文本中限制数字中的文本数量为0-59？

Question

我有一个Edit Text数字只能介于两者之间0-59,没有其他数字会输入Edit Text,我试过text-watcher但没有成功.任何的想法？

12-26 14:59:39.715: E/AndroidRuntime(19494): FATAL EXCEPTION: main
12-26 14:59:39.715: E/AndroidRuntime(19494): java.lang.StackOverflowError
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.findViewTraversal(ViewGroup.java:2765)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewById(View.java:10442)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findViewShouldExist(View.java:4281)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.findUserSetNextFocus(View.java:4263)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.FocusFinder.findNextFocus(FocusFinder.java:66)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.focusSearch(ViewGroup.java:569)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.focusSearch(ViewGroup.java:571)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.focusSearch(ViewGroup.java:571)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.focusSearch(ViewGroup.java:571)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.focusSearch(ViewGroup.java:571)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.focusSearch(ViewGroup.java:571)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.focusSearch(ViewGroup.java:571)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.focusSearch(ViewGroup.java:571)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.ViewGroup.focusSearch(ViewGroup.java:571)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.View.focusSearch(View.java:4221)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.onCreateInputConnection(TextView.java:5378)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.inputmethod.InputMethodManager.startInputInner(InputMethodManager.java:977)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.view.inputmethod.InputMethodManager.restartInput(InputMethodManager.java:932)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2958)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2907)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.EditText.setText(EditText.java:90)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2882)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at com.fishing.MyLocation$check_lat_degree.onTextChanged(MyLocation.java:236)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.sendOnTextChanged(TextView.java:7226)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:3045)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2907)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.EditText.setText(EditText.java:90)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2882)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at com.fishing.MyLocation$check_lat_degree.onTextChanged(MyLocation.java:236)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.sendOnTextChanged(TextView.java:7226)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:3045)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2907)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.EditText.setText(EditText.java:90)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2882)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at com.fishing.MyLocation$check_lat_degree.onTextChanged(MyLocation.java:236)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.sendOnTextChanged(TextView.java:7226)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:3045)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2907)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.EditText.setText(EditText.java:90)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2882)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at com.fishing.MyLocation$check_lat_degree.onTextChanged(MyLocation.java:236)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.sendOnTextChanged(TextView.java:7226)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:3045)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2907)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.EditText.setText(EditText.java:90)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2882)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at com.fishing.MyLocation$check_lat_degree.onTextChanged(MyLocation.java:236)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.sendOnTextChanged(TextView.java:7226)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:3045)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.java:2907)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.EditText.setText(EditText.java:90)
12-26 14:59:39.715: E/AndroidRuntime(19494):    at android.widget.TextView.setText(TextView.j

Answer 1

这是我喜欢这样做的方式:

public class InputFilterMinMax implements InputFilter {
    private int min;
    private int max;

    public InputFilterMinMax(int min, int max) {
        this.min = min;
        this.max = max;
    }

    @Override
    public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
        //noinspection EmptyCatchBlock
        try {
            int input = Integer.parseInt(dest.subSequence(0, dstart).toString() + source + dest.subSequence(dend, dest.length()));
            if (isInRange(min, max, input))
                return null;
        } catch (NumberFormatException nfe) { }
        return "";
    }

    private boolean isInRange(int a, int b, int c) {
        return b > a ? c >= a && c <= b : c >= b && c <= a;
    }
}

然后在EditText上设置过滤器:

myEditText.setFilters(new InputFilter[]{new InputFilterMinMax(0, 59)});

Answer 2

在XML中使用此代码仅允许编辑文本中的数字:

<EditText android:id="@+id/edit_text_id"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:iputType="numbers" />

要控制在EditText中输入的文本值:

edittext.addTextChangedListener(new TextWatcher(){
    public void afterTextChanged(Editable s) {}

    public void beforeTextChanged(CharSequence s, int start, int count, int after){}

    public void onTextChanged(CharSequence s, int start, int before, int count){
        String strEnteredVal = edittext.getText().toString();

        if(!strEnteredVal.equals("")){
        int num=Integer.parseInt(strEnteredVal);
        if(num<60){
         edittext.setText(""+num);
        }else{
         edittext.setText("");
        }
    }

});