小编use*_*862的帖子

我正在制作一个使用TextWatcher的长度转换器.缩短的代码是

 v1.addTextChangedListener(new TextWatcher() {

         @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                val1=Double.parseDouble(v1.getText().toString()); 
                val2=InchToCm(val1); 
                val3=InchToMl(val1);
                val4=InchToKm(val1);
                val5=InchToM(val1);
                val6=InchToY(val1);
                val7=InchToFt(val1);
                val8=InchToLg(val1);
                val9=InchToLgn(val1);
                val11=InchTomm(val1);
                val12=InchToNm(val1);


                v2. setText(Double.toString(val2)); 
                v3. setText(Double.toString(val3)); 
                v4. setText(Double.toString(val4)); 
                v5. setText(Double.toString(val5)); 
                v6. setText(Double.toString(val6)); 
                v7. setText(Double.toString(val7)); 
                v8. setText(Double.toString(val8));
                v9. setText(Double.toString(val9)); 
                v11. setText(Double.toString(val11)); 
                v12. setText(Double.toString(val12));

            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });
     v2.addTextChangedListener(new TextWatcher() {

         @Override
            public void beforeTextChanged(CharSequence s, int start, int …