android studio 無法執行

android studio

不明 2019-09-06 16:14:54 ‧ 2367 瀏覽

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請問這個到底哪裡出了問題？
拜託求解答 ~

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小魚 iT邦大師 1 級 ‧ 2019-09-06 16:16:28 檢舉

圖片可以顯示錯誤的地方,
但是最好還是要另外提供文字的原始碼.

dragonH iT邦超人 5 級 ‧ 2019-09-06 16:17:14 檢舉

下方 log們表示

我們絕對不是裝飾用的

不明檢舉

package com.example.myfirstapplication;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.LocaleList;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import java.text.DecimalFormat;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {

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

Button button = (Button)findViewById(R.id.button);
button.setOnClickListener(calcBMI);
}

private View.OnClickListener calcBMI = new View.OnClickListener() {
@Override
public void onClick(View v) {
DecimalFormat nf = new DecimalFormat("0.00");
EditText fieldheight = (EditText)findViewById(R.id.height);
EditText fieldweight = (EditText)findViewById(R.id.weight);
//身高
double height = Double.parseDouble(fieldheight.getText().toString())/100;
//體重
double weight = Double.parseDouble(fieldweight.getText().toString());
//計算出BMI值
double BMI = weight / (height*height);

//結果
TextView result = (TextView)findViewById(R.id.result);
result.setText(getText(R.string.bmi_result)
+ nf.format(BMI));

//建議
TextView fieldsuggest = (TextView)findViewById(R.id.suggest);
if(BMI > 25) //太重了
fieldsuggest.setText(R.string.advice_heavy);
else if(BMI < 20) //太輕了
fieldsuggest.setText(R.string.advice_light);
else //剛剛好
fieldsuggest.setText(R.string.advice_average);
}
};
}

import java.text.DecimalFormat;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {

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

Button button = (Button)findViewById(R.id.button);
        button.setOnClickListener(calcBMI);
    }

private View.OnClickListener calcBMI = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            DecimalFormat nf = new DecimalFormat(&quot;0.00&quot;);
            EditText fieldheight = (EditText)findViewById(R.id.height);
            EditText fieldweight = (EditText)findViewById(R.id.weight);
            //身高
            double height = Double.parseDouble(fieldheight.getText().toString())/100;
            //體重
            double weight = Double.parseDouble(fieldweight.getText().toString());
            //計算出BMI值
            double BMI = weight / (height*height);

//結果
            TextView result = (TextView)findViewById(R.id.result);
            result.setText(getText(R.string.bmi_result)
                    + nf.format(BMI));

//建議
            TextView fieldsuggest = (TextView)findViewById(R.id.suggest);
            if(BMI &gt; 25) //太重了
                fieldsuggest.setText(R.string.advice_heavy);
            else if(BMI &lt; 20) //太輕了
                fieldsuggest.setText(R.string.advice_light);
            else //剛剛好
                fieldsuggest.setText(R.string.advice_average);
        }
    };
}

修改

不明檢舉

好的！
請問這樣可以嗎？

dragonH iT邦超人 5 級 ‧ 2019-09-06 16:29:09 檢舉

不可以

你還是沒貼 log 說了什麼

不明檢舉

下午 03:39 IDE and Plugin Updates: The following component is ready to update: Android Emulator

下午 03:39 Gradle sync started with single-variant sync

下午 03:39 Project setup started

下午 03:39 Source generation ended in 113 ms

下午 03:39 Gradle sync finished in 19 s 820 ms

下午 03:39 NDK Resolution Outcome: Project settings: Gradle model version=5.4.1, NDK version is UNKNOWN

下午 03:43 Executing tasks: [:app:assembleDebug] in project C:\Users\jason\AndroidStudioProjects\MyFirstApplication

下午 03:43 Gradle build failed in 3 s 734 ms

下午 03:44 Executing tasks: [:app:assembleDebug] in project C:\Users\jason\AndroidStudioProjects\MyFirstApplication

下午 03:44 Gradle build failed in 1 s 703 ms

下午 03:44 Emulator: WARNING: unexpected system image feature string, emulator might not function correctly, please try updating the emulator.

下午 03:44 Emulator: Unexpected feature list: MultiDisplay VulkanNullOptionalStrings YUV420888toNV21 YUVCache

下午 03:45 Executing tasks: [:app:assembleDebug] in project C:\Users\jason\AndroidStudioProjects\MyFirstApplication

下午 03:45 Gradle build failed in 1 s 497 ms

下午 03:46 Executing tasks: [:app:assembleDebug] in project C:\Users\jason\AndroidStudioProjects\MyFirstApplication

下午 03:46 Gradle build failed in 1 s 521 ms

下午 04:23 Emulator: Process finished with exit code 0

dragonH iT邦超人 5 級 ‧ 2019-09-06 18:52:12 檢舉

紅線處他說了什麼

ant1017 iT邦新手 2 級 ‧ 2019-09-09 08:18:37 檢舉

我只看到一段關鍵字：下午 03:39 NDK Resolution Outcome: Project settings: Gradle model version=5.4.1, NDK version is UNKNOWN

貼成這樣會很懶得看，也不想看...
如果連問題都不知道在哪，也不知道該怎麼去看錯誤訊息，這樣大家只能瞎猜，你也得不到你想要的答案.....

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