Question

我一直试图弄清楚这一点，因为我想根据计算结果添加图像。我正在创建一个BMI计算器。我在Android工作室完美运行。如果结果是瘦或胖的图像，如果它说超重，只是想添加一个瘦的图像。这是代码。谢谢。

package ie.wit.fitnessmadeeasy;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class BmiActivity extends AppCompatActivity {


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_bmi);

    final Button calc = (Button) findViewById(R.id.calc);
    final EditText weight = (EditText) findViewById(R.id.weight);
    final EditText height = (EditText) findViewById(R.id.height);
    final TextView result = (TextView) findViewById(R.id.result);





    calc.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {



            String heightStr = height.getText().toString();
            String weightStr = weight.getText().toString();

            if (heightStr != null && !"".equals(heightStr)
                && weightStr != null  &&  !"".equals(weightStr)) {
                float heightValue = Float.parseFloat(heightStr) / 100;
                float weightValue = Float.parseFloat(weightStr);

                float bmi = weightValue / (heightValue * heightValue);



                String bmiLabel = "";

                if (bmi <= 15) {
                    bmiLabel = getString(R.string.very_very_skinny);
                } else if (bmi > 15 && bmi <= 16) {
                    bmiLabel = getString(R.string.very_skinny);
                } else if (bmi > 15 && bmi <= 18.5) {
                    bmiLabel = getString(R.string.skinny);
                } else if (bmi > 18.5 && bmi <= 25) {
                    bmiLabel = getString(R.string.normal);
                } else if (bmi > 25 && bmi <= 30) {
                    bmiLabel = getString(R.string.overweight);
                } else if (bmi > 30 && bmi <= 35) {
                    bmiLabel = getString(R.string.obese_series_i);
                } else if (bmi > 35 && bmi <= 40) {
                    bmiLabel = getString(R.string.obese_series_ii);
                } else {
                    bmiLabel = getString(R.string.obese_series_iii);
                }

                bmiLabel = bmi + "\n\n" + bmiLabel;
                result.setText(bmiLabel);
            }


        }
    });


}

}

Answer 1

嗯，这只是出于好的事情。 Android手册。

您将需要：

ImageView的

你的drawable文件夹中有2个drawables，一个瘦，一个胖

final ImageView imageViewBMI = (ImageView) findViewById(R.id.image_bmi);

然后在你的if / else

里面的某个地方

imageViewBMI.setImageResource(R.drawable.skinny);

根据计算添加图像

1 个答案: