在选择时更改文本颜色

Question

我正在尝试更改 Select 上 textView 中文本的文本颜色。我尝试了很多示例，但没有一个有效。 这是我的xml：

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/goal"
    android:layout_marginTop="15dp"
    android:orientation="vertical">

        <TextView
            android:id="@+id/goalText1"
            android:layout_width="match_parent"
            android:layout_height="63dp"
            android:background="@drawable/white_border_rounded"
            android:padding="4dp"
            android:layout_margin="18dp"
            android:layout_gravity="fill"
            android:gravity="center"
            android:text="@string/goal1"
            android:textColor="@color/white"
            android:textSize="21sp"/>
            <TextView
                android:id="@+id/goalText2"
                android:layout_width="match_parent"
                android:layout_height="63dp"
                android:background="@drawable/white_border_rounded"
                android:padding="4dp"
                android:layout_margin="18dp"
                android:layout_gravity="fill"
                android:gravity="center"
                android:text="@string/goal2"
                android:textColor="@color/white"
                android:textSize="21sp"/>
            <TextView
                android:id="@+id/goalText3"
                android:layout_width="match_parent"
                android:layout_height="63dp"
                android:background="@drawable/white_border_rounded"
                android:padding="4dp"
                android:layout_margin="18dp"
                android:layout_gravity="fill"
                android:gravity="center"
                android:text="@string/goal3"
                android:textColor="@color/white"
                android:textSize="21sp"/>
            <TextView
                android:id="@+id/goalText4"
                android:layout_width="match_parent"
                android:layout_height="63dp"
                android:background="@drawable/white_border_rounded"
                android:padding="4dp"
                android:layout_margin="18dp"
                android:layout_gravity="fill"
                android:gravity="center"
                android:text="@string/goal4"
                android:textColor="@color/white"
                android:textSize="21sp"/>
</LinearLayout>

这是我的 white_border_rounded：

<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_pressed="false" android:state_selected="false" >
    <shape android:shape="rectangle"  >
        <corners android:radius="50dip" />
        <stroke android:width="1dip" android:color="@color/white" />
    </shape>

</item>
<item android:state_pressed="true" android:state_selected="false" android:color="#444">
    <shape android:shape="rectangle"  >
        <corners android:radius="50dip" />
        <stroke android:width="1dip" android:color="@color/white" />
        <solid android:color="#fff"/>
    </shape>
</item>
<item android:state_pressed="false" android:state_selected="true" android:color="#444">
    <shape android:shape="rectangle"  >
        <corners android:radius="50dip" />
        <stroke android:width="1dip" android:color="@color/white" />
        <solid android:color="#fff"/>
    </shape>
</item>
<item >
    <shape android:state_pressed="true" android:state_selected="true" android:color="#444">
        <corners android:radius="50dip" />
        <stroke android:width="1dip" android:color="@color/white" />
        <solid android:color="#fff"/>
    </shape>
</item>

下面是我的java文件：

 public void onClick(View v) {
    switch(v.getId()){
        case R.id.goalText1:
            changeViewBackground(true,false,false,false);
            goal_selection = mGoal1.getText().toString();
            break;

        case R.id.goalText2:
            changeViewBackground(false,true,false,false);
            goal_selection = mGoal2.getText().toString();
            break;

        case R.id.goalText3:
            changeViewBackground(false,false,true,false);
            goal_selection = mGoal3.getText().toString();
            break;

        case R.id.goalText4:
            changeViewBackground(false,false,false,true);
            goal_selection = mGoal4.getText().toString();
            break;

        case R.id.btnGoal:
        Intent intent = new Intent(this, fiteness_level_selection.class);

}

 private void changeViewBackground(boolean view1,boolean view2,boolean
        view3,boolean view4) {
    mGoal1.setSelected(view1);
    mGoal2.setSelected(view2);
    mGoal3.setSelected(view3);
    mGoal4.setSelected(view4);

}

我希望当用户选择任何 textView 时，其文本颜色应更改为黑色，而当它选择其他 textview 时，之前的文本颜色应更改回原始颜色，即白色。

Answer 1

要更改TextView 的颜色，您需要执行以下操作。

TextView.onClickListener() {
textView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                TextView text = (TextView)view;
                text.setTextColor(getResources().getColor(android.R.color.black));
            }
        });

Answer 2

我会创建一个循环来遍历所有这些 TextViews。并根据它们的标签改变它们的颜色。首先，我会将所有 TextView 放入一个 ArrayList 中，当单击其中任何一个时，我会调用一个方法来设置它们中的文本颜色。我将在几分钟内编写代码并发布。

public class MainActivity extends AppCompatActivity {
List<TextView> textViewList = new ArrayList<TextView>();
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    TextView mGoal1 = (TextView)findViewById(R.id.goalText1); mGoal1.setTag("no");
    TextView mGoal2 = (TextView)findViewById(R.id.goalText2);mGoal2.setTag("no");
    TextView mGoal3 = (TextView)findViewById(R.id.goalText3);mGoal3.setTag("no");


    textViewList.add(mGoal1);
    textViewList.add(mGoal2);
    textViewList.add(mGoal3);

    mGoal1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
           view.setTag("yes");
            ChangeColor();
        }
    });
    mGoal2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            view.setTag("yes");
            ChangeColor();
        }
    });
    mGoal3.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            view.setTag("yes");
            ChangeColor();
        }
    });

}
void ChangeColor(){


        for (int i =0;i<textViewList.size();i++)
        {
            if (textViewList.get(i).getTag().equals("yes")){
                textViewList.get(i).setTextColor(Color.parseColor("#000000"));
                textViewList.get(i).setTag("no");
            }
            else textViewList.get(i).setTextColor(Color.parseColor("#ffffff"));

        }


}