Question

我想更改微调器中项目的颜色，说3种不同颜色，所有项目都应动态添加。我在微调器列表中添加项目。假设我有2个列表，我想在单个微调项目中合并两个列表项但是两者都应该是不同的颜色。我的xml文件是：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >`

<TextView
    android:id="@+id/textView1"
    android:layout_width="fill_parent"
    android:layout_height="50dp"
    android:background="#66CCFF"
    android:gravity="center"
    android:text="abcd"
    android:textColor="@android:color/white"
    android:textAppearance="?android:attr/textAppearanceLarge" />

<TextView
    android:id="@+id/tvMaterial"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/material"
    android:textAppearance="?android:attr/textAppearanceMedium" />


<Spinner
    android:id="@+id/spinMaterial"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" 

    />

<TextView
    android:id="@+id/tvWeight"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/Weight"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<EditText
    android:id="@+id/etWeight"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:inputType="text"
    android:hint="Enter Weight"
    >
</EditText>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal" >

    <Button
        android:id="@+id/bAddCat"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Add" />

    <Button
        android:id="@+id/bCancelCat"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Cancel" />

</LinearLayout>    
</LinearLayout>

和Java类是

    package com.androidui;
    import java.util.ArrayList;
    import java.util.List;

    import android.app.Activity;
    import android.content.Intent;
    import android.os.Bundle;
    import android.text.Editable;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.ArrayAdapter;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.Spinner;
    import android.widget.TextView;
    import android.widget.Toast;

    public class AddCategory extends Activity {

TextView tv1;
String cat = null;
Spinner spin;
Button add;
Button cancel;
EditText etWt;
@Override

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.add_category);

    tv1 = (TextView)findViewById(R.id.textView1);
    add = (Button)findViewById(R.id.bAddCat);
    cancel = (Button)findViewById(R.id.bCancelCat);
    etWt = (EditText)findViewById(R.id.etWeight);

    Bundle extras = getIntent().getExtras();
    if (extras != null) {
        cat = extras.getString("name");
        tv1.setText(cat);
    }

    addItemsOnSpinner();

    //Onclick listners to buttons
    add.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            Toast.makeText(AddCategory.this,
                    "Material : "+ spin.getSelectedItem().toString() + "\nWeight : " + etWt.getText().toString(),
                    Toast.LENGTH_LONG).show();
        }
    });

    cancel.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            finish();
        }
    });
}

public void addItemsOnSpinner() {

    spin = (Spinner) findViewById(R.id.spinMaterial);
    List<String> list = new ArrayList<String>();
    list.add("Material 1");
    list.add("Material 2");
    list.add("Material 3");
    list.add("Material 4");
    list.add("Material 5");
    list.add("Material 6");

    //Second List
    List<String> list2 = new ArrayList<String>();
    list2.add("Mat 7");
    list2.add("Mat 8");
    list2.add("Mat 9");

    //Combined List
    List<String> listCombine = new ArrayList<String>();
    listCombine.addAll(list);
    listCombine.addAll(list2);

    ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
        android.R.layout.simple_spinner_item, listCombine); 

    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);


    spin.setAdapter(dataAdapter);
  }

    }

请建议一种方法。感谢名单

Answer 1

您可以尝试使用SpannableString为文字着色http://developer.android.com/reference/android/text/SpannableString.html

更改微调器中项目的颜色

1 个答案: