Question

我要做的是拥有一个简单的短信应用程序。用户输入他们的姓名和号码，并选择切换布尔值框，然后输入按钮创建打开内置短信的意图并根据输入创建消息。

我遇到的问题是当我再次启动应用程序时重置表单。理想我想拥有整个应用程序RESTART，但是我不太确定它是如何工作的。

我被告知使用： editText.setText（ “”）; 将字段再次置为空，但是eclipse对我不好。所以我的问题是，如何使用上面的代码更改main_activity文件，以便在按下按钮时清除编辑文本表单。

public class MainActivity extends Activity {

public boolean sexybox = false;

public void sexyBoolean(View view){ // changes the value from true to false etc

    if(sexybox == false)
        {
        sexybox = true;
        }
    else 
    {
        sexybox = false;
    }

}

/** Called when the user clicks the Send button */
public void sendText(View view) {

    Intent smsIntent = new Intent(Intent.ACTION_VIEW);
    //gives me user and number to be used.
    EditText username = (EditText) findViewById(R.id.edit_name);
    EditText usernumber = (EditText) findViewById(R.id.edit_number);
    String usernamestring = username.getText().toString();
    String usernumberstring = usernumber.getText().toString();
    //checks if its null fields:
    if(usernamestring.isEmpty())
    {
        Context context = getApplicationContext();
        CharSequence text = "What's your name?";
        int duration = Toast.LENGTH_SHORT;

        Toast toast = Toast.makeText(context, text, duration);
        TextView v = (TextView) toast.getView().findViewById(android.R.id.message);
        v.setTextColor(Color.CYAN);
        toast.show();
        return;
    }
    if(usernumberstring.isEmpty())
    {
        Context context = getApplicationContext();
        CharSequence text = "What's your numbah?";
        int duration = Toast.LENGTH_SHORT;

        Toast toast = Toast.makeText(context, text, duration);
        TextView v = (TextView) toast.getView().findViewById(android.R.id.message);
        v.setTextColor(Color.CYAN);
        toast.show();
        return;
    }

    ///
    System.out.println("SENDING MESSAGE:");
    System.out.println(usernamestring);
    System.out.println(usernumberstring);
    String body = "Hi Jake - I'm " + usernamestring + "! I'm sending a self text so we can talk or whatever. ";
    //IF CUTE button toggled
        if(sexybox == true)
        {
            body = body + "I think you're hot too ;)";
        }

    smsIntent.putExtra("sms_body", body); //obvi the message
    smsIntent.putExtra("address", usernumberstring); //obvi the number, replace usernumberstring
    smsIntent.setType("vnd.android-dir/mms-sms"); // guess i leave this alone
//RESET FIELDS ????
//        EditText edit_name = (EditText) findViewById(R.id.edit_name);
//        edit_name.setText("");
  //  editText.setText("");
    //editText.setText(null);

    startActivity(smsIntent);
}


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


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

}

// XML：

<TextView
    android:id="@+id/toptext"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#303030"
    android:text="@string/toptext"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:textColor="#33B5E5"
    android:textSize="50sp" />

<TextView
    android:id="@+id/toptext2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#303030"
    android:text="@string/toptext2"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:textColor="#33B5E5" />

<EditText
    android:id="@+id/edit_name"
    android:layout_width="match_parent"
    android:layout_height="75dp"
    android:ems="10"
    android:hint="@string/edit_name" />

<EditText
    android:id="@+id/edit_number"
    android:layout_width="match_parent"
    android:layout_height="137dp"
    android:ems="10"
    android:hint="@string/edit_number"
    android:inputType="phone" />

<TextView
    android:id="@+id/thanks"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:clickable="true"
    android:text="@string/thanks"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:textColor="#33B5E5" />

<CheckBox
    android:id="@+id/sexycheckbox"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:onClick="sexyBoolean"
    android:text="@string/sexycheckbox" />

<Button
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#303030"
    android:onClick="sendText"
    android:text="@string/button_send"
    android:textColor="@android:color/white" />

</LinearLayout>

如何在按钮的onClick意图通过后清除EditText表单

0 个答案: