Android如何使用输入数据设置单击的TextView

时间：2015-02-24 23:09:25

标签： android textview

我有一个TextView表（60 TextView），用户可以触摸它们并设置所单击的TextView的文本和背景。 单击一个TextView时，此事件会打开DialogActivity startActivityForResult并收回两个变量（字符串和颜色）。 我的问题是如何使用onActivityResult返回的输入变量设置单击的TextView的文本和背景？

那里有一些代码 活性

package com.ddz.diarioscolastico;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

public class ActivitySetOrario extends ActionBarActivity {

//Static perch� cosi non perdo i dati inseriti in precedenza!
static DataBase DB = new DataBase();
static int clickedTextViewId; // Declare TextView as class level member field


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

}//Fine oncreate

//Prende indietro la materia aggiunta dall'ActivityAddMateria
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if(requestCode == 1) {
        if (resultCode == RESULT_OK) {

            String result = data.getStringExtra("result"); //Take the materia from Dialog
            int color = data.getIntExtra("color", 1); //Take the color from Dialog

            Materia materia;
            materia = new Materia();
            materia.setMateria(result); //put the name materia into class materia
            materia.setColor(color); //put the color materia into class materia
            DB.getMaterie().add(materia);
            // Now use mTextView  here
            //View view = findViewById(clickedTextViewId);
            TextView clickedtextView = (TextView) findViewById(clickedTextViewId); //(TextView) view;
            if(clickedTextViewId == clickedtextView.getId()) {
                clickedtextView.setText(result);
                clickedtextView.setBackgroundColor(color);
            }
        }

        if (resultCode == RESULT_CANCELED) {
            //Nessuna materia inserita
        }
    }
}//onActivityResult

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

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.

    switch (item.getItemId()) {
    case R.id.draw_orario:
        //addMateria();
        return true;
    case R.id.save_data_orario:
        //SERIALIZZO I DATI CHE DOVRA PRENDERE ActivityOrario
        //FileOutputStream fos = context.openFileOutput(fileName, Context.MODE_PRIVATE);
        //ObjectOutputStream os = new ObjectOutputStream(fos);
        //os.writeObject(this);
        //os.close();
        //fos.close();
        backToOrario();
        return true;     
    case R.id.exit_orario:
        //Torno alla schermata orario annullo ogni modifica NON SERIALIZZO
        backToOrario();
        finish();
        return true;     
    case R.id.action_settings:
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}

//Torna alla ActivityOrario
public void backToOrario(){
    Intent myIntent = new Intent(ActivitySetOrario.this, ActivityOrario.class);
    startActivity(myIntent);
}

public void addMateria(View v){
    //To get ID of your TextView do this
    clickedTextViewId = v.getId();
    //StartActivityForResult perche mi aspetto la materia inserita dall'altra activity
    Intent myIntent = new Intent(ActivitySetOrario.this, ActivityAddMateria.class);
    ActivitySetOrario.this.startActivityForResult(myIntent, 1);
}
}

activity_set_orario.xml：

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/blue_orario"
android:id="@+id/table">

<TableRow
    android:id="@+id/dayrow"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:paddingLeft="35dp" >


    <TextView
        android:id="@+id/d1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Lun."
        android:textColor="@color/text_orario"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/d2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Mar."
        android:textColor="@color/text_orario"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/d3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Mer."
        android:textColor="@color/text_orario"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/d4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Gio."
        android:textColor="@color/text_orario"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/d5"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Ven."
        android:textColor="@color/text_orario"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/d6"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Sab."
        android:textColor="@color/text_orario"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</TableRow>
<ScrollView
  android:id="@+id/scrollorario"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content" >
 <LinearLayout
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical" >
            <TableRow
                android:id="@+id/prima_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="1"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?       android:attr/textAppearanceLarge" />

                <TextView
                    android:id="@+id/mat11"
                    android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="20dp"
                    android:gravity="center"
                    android:clickable="true"
                    android:onClick="addMateria"
                    android:background="@color/grigio_chiaro" />
                <TextView
                    android:id="@+id/mat12"
                    android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />
                <TextView
                    android:id="@+id/mat13"
                      android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />
                <TextView
                    android:id="@+id/mat14"
                      android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />
                <TextView
                    android:id="@+id/mat15"
                      android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />
                <TextView
                    android:id="@+id/mat16"
                      android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />

            </TableRow>

            <TableRow
                android:id="@+id/seconda_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="2"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?android:attr/textAppearanceLarge" />
                <TextView
                    android:id="@+id/mat21"
                   android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="20dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />
                <TextView
                    android:id="@+id/mat22"
                    android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />
                <TextView
                    android:id="@+id/mat23"
                      android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />
                <TextView
                    android:id="@+id/mat24"
                      android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />
                <TextView
                    android:id="@+id/mat25"
                      android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />
                <TextView
                    android:id="@+id/mat26"
                      android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="33dp"
                    android:gravity="center"
                    android:background="@color/grigio_chiaro"
                    android:text="" />

            </TableRow>

            <TableRow
                android:id="@+id/terza_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="3"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?android:attr/textAppearanceLarge" />

            </TableRow>

            <TableRow
                android:id="@+id/quarta_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="4"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?android:attr/textAppearanceLarge" />

            </TableRow>

            <TableRow
                android:id="@+id/quinta_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h5"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="5"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?android:attr/textAppearanceLarge" />

            </TableRow>

            <TableRow
                android:id="@+id/sesta_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h6"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="6"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?android:attr/textAppearanceLarge" />

            </TableRow>

            <TableRow
                android:id="@+id/settima_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h7"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="7"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?android:attr/textAppearanceLarge" />

            </TableRow>

            <TableRow
                android:id="@+id/ottava_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h8"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="8"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?android:attr/textAppearanceLarge" />

            </TableRow>

            <TableRow
                android:id="@+id/nona_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h9"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="9"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?android:attr/textAppearanceLarge" />


            </TableRow>

            <TableRow
                android:id="@+id/decima_riga"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <TextView
                    android:id="@+id/h10"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="10"
                    android:textColor="@color/text_orario"
                    android:textAppearance="?android:attr/textAppearanceLarge" />


            </TableRow>
        </LinearLayout>

1 个答案:

答案 0 :(得分：0)

实际上，您必须从addMateria(View v)维护TextView的ID或使用直接TextView。

有许多方法可以保持它，类级变量等，

比如，将TextView声明为类级成员字段。

public class ActivitySetOrario extends ActionBarActivity {

  //Static perch� cosi non perdo i dati inseriti in precedenza!
  static DataBase DB = new DataBase();
  int clickedTextViewId; // Declare TextViewId as class level member field

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

 }/

现在，在addMateria(View v)

中获取点击的Textview对mTextView的引用 
 public void addMateria(View v){
        //To get ID of your TextView do this
       if(v instanceOf TextView) 
       {
        clickedTextViewId = v.getId();
       }
        //StartActivityForResult perche mi aspetto la materia inserita dall'altra activity
        Intent myIntent = new Intent(ActivitySetOrario.this, ActivityAddMateria.class);
        ActivitySetOrario.this.startActivityForResult(myIntent, 1);
    }

再次访问mTextView中的onActivityResult()，以更新颜色和文字

//Prende indietro la materia aggiunta dall'ActivityAddMateria
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
            if(resultCode == RESULT_OK){

                String result = data.getStringExtra("result"); //Take the materia from Dialog
                int color = data.getIntExtra("color",1); //Take the color from Dialog

                Materia materia;
                materia = new Materia();
                materia.setMateria(result); //put the name materia into class materia
                materia.setColor(color); //put the color materia into class materia
                DB.getMaterie().add(materia);
               // Now use mTextView  here

              try
             {
               View view = findViewById(clickedTextViewId);
                  if(view instanceOf TextView)
                 {
                   TextView textView = (TextView) view;
                   textView .setText(result);
                   textView .setBackgroundColor(color);
                 }
             }catch(Exception ex)
             {
                ex.printStacktrace();
             }
             } 
             if (resultCode == RESULT_CANCELED) {
                //Nessuna materia inserita
            }
    }//onActivity
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