我試圖創建一個Android應用程序,但單擊按鈕時出現錯誤。無法執行android的方法:onClick - 解析字符串倍增
我想要做的是將字符串轉換爲雙精度。我無法將文本字段用作數字,因爲我正在處理經緯度,所以我需要負數,而type =「number」不允許使用該數字。
這是我執行的功能:
public void insertSite(View view) {
String type = ((AutoCompleteTextView)findViewById(R.id.type)).getText().toString();
String address = ((AutoCompleteTextView)findViewById(R.id.address)).getText().toString();
String city = ((AutoCompleteTextView)findViewById(R.id.city)).getText().toString();
String district = ((AutoCompleteTextView)findViewById(R.id.district)).getText().toString();
String cep = ((AutoCompleteTextView)findViewById(R.id.cep)).getText().toString();
String state = ((AutoCompleteTextView)findViewById(R.id.state)).getText().toString();
double latitude = Double.parseDouble(((EditText)findViewById(R.id.latitude)).getText().toString());
double longitude = Double.parseDouble(((AutoCompleteTextView)findViewById(R.id.longitude)).getText().toString());
double altitude = Double.parseDouble(((AutoCompleteTextView)findViewById(R.id.altitude)).getText().toString());
try {
VivoDbDAO dao = new VivoDbDAO(this);
dao.insertSite(
type,
address,
city,
district,
state,
cep,
latitude,
longitude,
altitude);
Toast.makeText(this, "Site 1 inserido", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(this, CadastroImovel2Activity.class);
startActivity(intent);
finish();
} catch (Exception e) {
Toast.makeText(this, e.toString(), Toast.LENGTH_LONG).show();
}
}
這裏是佈局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/cadastroImovel"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alpha=".9"
android:orientation="vertical"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.thiago.muitogelo.CadastroActivity"
>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="65dp"
android:background="?attr/colorPrimary"
android:backgroundTint="@color/roxoVivo"
app:popupTheme="@style/AppTheme.PopupOverlay"
app:title="Dr. Antena" />
</android.support.design.widget.AppBarLayout>
<Space
android:layout_width="wrap_content"
android:layout_height="40dp" />
<ScrollView
android:layout_width="300dp"
android:layout_height="350dp"
android:layout_gravity="center">
<LinearLayout
android:layout_width="300dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dp">
<AutoCompleteTextView
android:id="@+id/type"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/text_field"
android:elevation="5dp"
android:paddingBottom="10dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:hint="Prédio ou Térreo?"
android:textColor="@color/roxoEscuro" />
<Space
android:layout_width="match_parent"
android:layout_height="10dp" />
<AutoCompleteTextView
android:id="@+id/address"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/text_field"
android:elevation="5dp"
android:paddingBottom="10dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:hint="Endereço"
android:textColor="@color/roxoEscuro" />
<Space
android:layout_width="match_parent"
android:layout_height="10dp" />
<AutoCompleteTextView
android:id="@+id/city"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/text_field"
android:elevation="5dp"
android:inputType="phone"
android:paddingBottom="10dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:hint="Cidade"
android:textColor="@color/roxoEscuro" />
<Space
android:layout_width="match_parent"
android:layout_height="10dp" />
<AutoCompleteTextView
android:id="@+id/district"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/text_field"
android:elevation="5dp"
android:inputType="text"
android:paddingBottom="10dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:hint="Bairro"
android:textColor="@color/roxoEscuro" />
<Space
android:layout_width="match_parent"
android:layout_height="10dp" />
<AutoCompleteTextView
android:id="@+id/state"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/text_field"
android:elevation="5dp"
android:inputType="text"
android:paddingBottom="10dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:hint="Estado"
android:textColor="@color/roxoEscuro" />
<Space
android:layout_width="match_parent"
android:layout_height="10dp" />
<AutoCompleteTextView
android:id="@+id/cep"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/text_field"
android:elevation="5dp"
android:inputType="number"
android:paddingBottom="10dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:hint="CEP"
android:textColor="@color/roxoEscuro" />
<Space
android:layout_width="match_parent"
android:layout_height="10dp" />
<EditText
android:id="@+id/latitude"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="@drawable/button2"
android:inputType="text"
android:paddingBottom="10dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:hint="Latitude"
android:textColor="@color/roxoEscuro" />
<Space
android:layout_width="match_parent"
android:layout_height="10dp" />
<AutoCompleteTextView
android:id="@+id/longitude"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="@drawable/button2"
android:inputType="text"
android:hint="Longitude"
android:paddingBottom="10dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:textColor="@color/roxoEscuro"
android:clickable="false" />
<Space
android:layout_width="match_parent"
android:layout_height="10dp" />
<AutoCompleteTextView
android:id="@+id/altitude"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="@drawable/button2"
android:inputType="text"
android:paddingBottom="10dp"
android:paddingLeft="20dp"
android:paddingTop="10dp"
android:hint="Altitude"
android:textColor="@color/roxoEscuro"
android:clickable="false" />
</LinearLayout>
</ScrollView>
<Space
android:layout_width="wrap_content"
android:layout_height="40dp" />
<LinearLayout
android:layout_width="300dp"
android:layout_height="wrap_content"
android:weightSum="2"
android:layout_gravity="center"
android:padding="10dp">
<Button
android:layout_width="250dp"
android:layout_height="40dp"
android:layout_gravity="center"
android:background="@drawable/button2"
android:text="Próximo"
android:textColor="@color/roxoEscuro"
android:id="@+id/btConcluidoCadastro"
android:onClick="insertSite"
android:layout_weight="2"/>
</LinearLayout>
</LinearLayout>
而且這裏是日誌:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.thiago.muitogelo, PID: 334
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
at android.view.View.performClick(View.java:5716)
at android.widget.TextView.performClick(TextView.java:10926)
at android.view.View$PerformClick.run(View.java:22596)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7325)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:5716)
at android.widget.TextView.performClick(TextView.java:10926)
at android.view.View$PerformClick.run(View.java:22596)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7325)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: java.lang.NumberFormatException: Invalid double: ""
at java.lang.StringToReal.invalidReal(StringToReal.java:63)
at java.lang.StringToReal.parseDouble(StringToReal.java:267)
at java.lang.Double.parseDouble(Double.java:301)
at com.example.thiago.muitogelo.CadastroImovel1Activity.insertSite(CadastroImovel1Activity.java:30)
at java.lang.reflect.Method.invoke(Native Method)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:5716)
at android.widget.TextView.performClick(TextView.java:10926)
at android.view.View$PerformClick.run(View.java:22596)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7325)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
非常感謝!就是這樣! –