小贝子编程

"complete action using"不应该弹出的对话框



我有一个具有2个按钮的应用程序：一个进行计算，另一个可以启动带有浏览器的网站。当用户单击按钮1时，答案应显示。当用户单击按钮2时，浏览器将将它们引向网站。麻烦是：单击Button1 Causess弹出"使用"对话框"完整的操作"，提示用户选择4件事（应用程序，过程等）之一。这没有发生过，很奇怪。我唯一能想到的是，OnClickListener和Button 1没有新意图的问题，所以我不知道该对话是如何出现的。

这是清单：

 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.example.costaload"
 android:versionCode="1"
 android:versionName="1.0" >
 <uses-sdk
    android:minSdkVersion="7"
    android:targetSdkVersion="15" />
 <application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".MainActivity"
        android:label="@string/title_activity_main" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
 </application>
 </manifest>

这是我的代码：

package com.example.costaload;
import com.example.costloads.R;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Button;
import android.widget.TextView;
import android.view.View;
import android.view.View.OnClickListener;
public class MainActivity extends Activity {
EditText mile, diesel;
Button button1, button2;
TextView tv, tv2, tv3;
private double x, y, z, costper, gallon, litres, ophours, stopdrive;
CheckBox checkBox1, checkBox2, checkBox3, checkBox4;
NumberFormat format = NumberFormat.getCurrencyInstance();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mile = (EditText) findViewById(R.id.mile);
checkBox1 = (CheckBox) findViewById(R.id.checkBox1);
checkBox2 = (CheckBox) findViewById(R.id.checkBox2);
checkBox3 = (CheckBox) findViewById(R.id.checkBox3);
checkBox4 = (CheckBox) findViewById(R.id.checkBox4);
button1 = (Button) findViewById(R.id.button1);
button2 = (Button) findViewById(R.id.button2);
button1.setOnClickListener(button1onClickListener);
OnClickListener button2onClickListener = null;
button2.setOnClickListener(button2onClickListener);
tv = (TextView) findViewById(R.id.cost);
tv2 = (TextView) findViewById(R.id.cpm);
tv3 = (TextView) findViewById(R.id.gallons);
diesel = (EditText) findViewById(R.id.diesel);
}
private OnClickListener button1onClickListener = new OnClickListener() {
   public void onClick(final View v) {
    x = Double.parseDouble(mile.getText().toString());
    y = Double.parseDouble(diesel.getText().toString());
    if (checkBox2.isChecked()) {
        x = x * 2;
    }
    if (checkBox1.isChecked()) {
        x = x * 0.62137;
    }
    ophours = 0;
    ophours = (x / 55) + 2;
    if (ophours >= 11) {
        stopdrive = (ophours / 10) - 1;
        if (stopdrive > 1) { // This block isn't closed.
            ophours = ophours + (stopdrive * 10);
        }
        gallon = x / 5.5;
        if (checkBox4.isChecked()) {
            gallon = gallon + (ophours * 1.1);
        }
        if (checkBox3.isChecked()) {
            litres = gallon * 3.785;
            tv3.setText(new DecimalFormat("####.##").format(litres)
                    + "L");
        }
        z = (gallon * y) + (x * 0.655);
        costper = z / x;
        tv.setText(format.format(z));
        tv2.setText(format.format(costper) + "/mile");
        tv3.setText(new DecimalFormat("####.##").format(gallon)
                + "gal.");
    }
    ;
};
private OnClickListener button2OnClickListener = new OnClickListener() {
    public void onClick(final View v) {
        Intent browserIntent = new Intent(Intent.ACTION_VIEW,
                Url.parse("http://www.ratenroll.com"));
        startActivity(browserIntent);
    }
  };
 };
};

这是活动XML：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:text="# of miles"
    android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/textView1"
    android:layout_marginTop="40dp"
    android:text="Price of diesel"
    android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
    android:id="@+id/diesel"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/textView2"
    android:layout_alignBottom="@+id/textView2"
    android:layout_alignLeft="@+id/mile"
    android:layout_alignParentRight="true"
    android:ems="10"
    android:inputType="numberDecimal" />
<EditText
    android:id="@+id/mile"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_alignParentTop="true"
    android:layout_toRightOf="@+id/checkBox3"
    android:ems="10"
    android:inputType="numberDecimal" >
    <requestFocus />
</EditText>
<Button
    android:id="@+id/button2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:text="Visit www.ratenroll.com" />
<CheckBox
    android:id="@+id/checkBox1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/diesel"
    android:layout_marginTop="14dp"
    android:text="Kilometres (not miles)" />
<CheckBox
    android:id="@+id/checkBox2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/checkBox1"
    android:layout_alignBottom="@+id/checkBox1"
    android:layout_alignParentRight="true"
    android:text="Round trip" />
<CheckBox
    android:id="@+id/checkBox3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/checkBox1"
    android:text="Litres (not gallons)" />
<CheckBox
    android:id="@+id/checkBox4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/checkBox3"
    android:layout_alignBottom="@+id/checkBox3"
    android:layout_alignParentRight="true"
    android:text="Reefer load" />
<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/checkBox3"
    android:layout_marginTop="50dp"
    android:layout_toRightOf="@+id/textView2"
    android:text="Compute" />
<TextView
    android:id="@+id/textView3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/button1"
    android:layout_marginTop="26dp"
    android:text="Total Cost"
    android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
    android:id="@+id/textView4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/textView3"
    android:text="Cost per mile"
    android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
    android:id="@+id/cost"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/textView4"
    android:layout_alignParentRight="true"
    android:text=" "
    android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
    android:id="@+id/cpm"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/textView4"
    android:layout_alignBottom="@+id/textView4"
    android:layout_alignParentRight="true"
    android:text="   "
    android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
    android:id="@+id/textView5"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignRight="@+id/textView4"
    android:layout_below="@+id/textView4"
    android:text="Fuel required"
    android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
    android:id="@+id/gallons"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/textView5"
    android:layout_alignBottom="@+id/textView5"
    android:layout_alignParentRight="true"
    android:text="   "
    android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>

谢谢您的查看。

您将相同的onclicklistener添加到两个按钮并使用开关语句区分它们的方法很容易出错。

package com.example.costaload;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Button;
import android.widget.TextView;
import android.view.View;
import android.view.View.OnClickListener;
public class MainActivity extends Activity {
    EditText mile, diesel;
    Button button1, button2;
    TextView tv, tv2, tv3;
    private double x, y, z, costper, gallon, litres, ophours, stopdrive;
    CheckBox checkBox1, checkBox2, checkBox3, checkBox4;
    NumberFormat format = NumberFormat.getCurrencyInstance();
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mile = (EditText) findViewById(R.id.mile);
        checkBox1 = (CheckBox) findViewById(R.id.checkBox1);
        checkBox2 = (CheckBox) findViewById(R.id.checkBox2);
        checkBox3 = (CheckBox) findViewById(R.id.checkBox3);
        checkBox4 = (CheckBox) findViewById(R.id.checkBox4);
        button1 = (Button) findViewById(R.id.button1);
        button2 = (Button) findViewById(R.id.button2);
        button1.setOnClickListener(button1onClickListener);
        button2.setOnClickListener(button2OnClickListener);
        tv = (TextView) findViewById(R.id.cost);
        tv2 = (TextView) findViewById(R.id.cpm);
        tv3 = (TextView) findViewById(R.id.gallons);
        diesel = (EditText) findViewById(R.id.diesel);
    }
    private OnClickListener button1onClickListener = new OnClickListener() {
        public void onClick(final View v) {
            x = Double.parseDouble(mile.getText().toString());
            y = Double.parseDouble(diesel.getText().toString());
            if (checkBox2.isChecked()) {
                x = x * 2;
            }
            if (checkBox1.isChecked()) {
                x = x * 0.62137;
            }
            ophours = 0;
            ophours = (x / 55) + 2;
            if (ophours >= 11) {
                stopdrive = (ophours / 10) - 1;
            }
            if (stopdrive > 1) {
                ophours = ophours + (stopdrive * 10);
            }
            gallon = x / 5.5;
            if (checkBox4.isChecked()) {
                gallon = gallon + (ophours * 1.1);
            }
            if (checkBox3.isChecked()) {
                litres = gallon * 3.785;
                tv3.setText(new DecimalFormat("####.##").format(litres) + "L");
            }
            z = (gallon * y) + (x * 0.655);
            costper = z / x;
            tv.setText(format.format(z));
            tv2.setText(format.format(costper) + "/mile");
            tv3.setText(new DecimalFormat("####.##").format(gallon) + "gal.");
        }
    };
    private OnClickListener button2OnClickListener = new OnClickListener() {
        public void onClick(final View v) {
            Intent browserIntent = new Intent(Intent.ACTION_VIEW,
                    Uri.parse("http://www.ratenroll.com"));
            startActivity(browserIntent);
        }
    };
};

我没有更改您的XML文件。

祝你好运。

在这里做什么额外的支撑？

tv3.setText(new DecimalFormat("####.##").format(gallon)+"gal.");
         break;}  // did you mean to do this?

在第二个案例语句中将支架移至break;之后。

P.S。请养成正确缩进代码并排队牙套的习惯。还要使用IDE的自动代码格式功能来保持整洁。这将使您的事情变得更加容易。

P.P.S。对于其他读者。为什么这甚至会编译，因为第二个案例语句现在在交换机之外？

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