單擊突出顯示textview

-2

我創建了一個線性佈局，其中有多個文本視圖。目前，我一次只能突出顯示一個文本視圖。現在我想要每當用戶點擊任何文本視圖時，它應該突出顯示，並且我想限制用戶最多3個選擇。單擊突出顯示textview

這裏是我的XML文件：

<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"/> 

      <TextView 
       android:id="@+id/goalText5" 
       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/goal5" 
       android:textColor="@color/white" 
       android:textSize="21sp"/> 
      <TextView 
       android:id="@+id/goalText6" 
       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/goal6" 
       android:textColor="@color/white" 
       android:textSize="21sp"/> 
      <TextView 
       android:id="@+id/goalText7" 
       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/goal7" 
       android:textColor="@color/white" 
       android:textSize="21sp"/> 
      <TextView 
       android:id="@+id/goalText8" 
       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/goal8" 
       android:textColor="@color/white" 
       android:textSize="21sp"/> 
</LinearLayout>

這裏是我的類文件：

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); 


      try { 
       obj.put("SelectedGoal", goal_selection); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
      intent.putExtra("GoalJson", obj.toString()); 
      startActivity(intent); 
      break; 


    } 

} 

private void changeViewBackground(boolean view1, boolean view2, boolean 
     view3, boolean view4) { 
    mGoal1.setSelected(view1); 
    mGoal2.setSelected(view2); 
    mGoal3.setSelected(view3); 
    mGoal4.setSelected(view4); 
    if(view1==true){ 
     mGoal1.setTextColor(getResources().getColor(R.color.black)); 
    } 
    else { 
     mGoal1.setTextColor(getResources().getColor(R.color.white)); 
    } 
    if(view2==true){ 
     mGoal2.setTextColor(getResources().getColor(R.color.black)); 
    } 
    else { 
     mGoal2.setTextColor(getResources().getColor(R.color.white)); 
    } 
    if(view3==true){ 
     mGoal3.setTextColor(getResources().getColor(R.color.black)); 
    } 
    else { 
     mGoal3.setTextColor(getResources().getColor(R.color.white)); 
    } 
    if(view4==true){ 
     mGoal4.setTextColor(getResources().getColor(R.color.black)); 
    } 
    else { 
     mGoal4.setTextColor(getResources().getColor(R.color.white)); 
    }

這裏是我繪製的xml文件：

<?xml version="1.0" encoding="utf-8"?> 
<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" > 
     <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" > 
     <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" > 
      <corners android:radius="50dip" /> 
      <stroke android:width="1dip" android:color="@color/white" /> 
      <solid android:color="#fff"/> 
     </shape> 
    </item> 

</selector>

任何人都可以建議我怎麼能我達到了嗎？

來源

2016-09-08 gaurav tiwari

使用選擇器爲 –

您可以使用計數器來實現此目的。 –

@VishalPatoliya我已經使用選擇器 –

試試這個代碼......

@Override 
public void onClick(View v) { 
    switch (v.getId()) { 
     case R.id.goalText1: 
      if (count <= 2) { 
       mGoal1.setTextColor(getResources().getColor(R.color.black)); 
       count++; 
      } else { 
       Toast.makeText(Main2Activity.this, "cant select more", Toast.LENGTH_SHORT).show(); 
      } 
      break; 

     case R.id.goalText2: 
      if (count <= 2) { 
       mGoal2.setTextColor(getResources().getColor(R.color.black)); 
       count++; 
      } else { 
       Toast.makeText(Main2Activity.this, "cant select more", Toast.LENGTH_SHORT).show(); 
      } 
      break; 

     case R.id.goalText3: 
      if (count <= 2) { 
       mGoal3.setTextColor(getResources().getColor(R.color.black)); 
       count++; 
      } else { 
       Toast.makeText(Main2Activity.this, "cant select more", Toast.LENGTH_SHORT).show(); 
      } 
      break; 

     case R.id.goalText4: 
      if (count <= 2) { 
       mGoal4.setTextColor(getResources().getColor(R.color.black)); 
       count++; 
      } else { 
       Toast.makeText(Main2Activity.this, "cant select more", Toast.LENGTH_SHORT).show(); 
      } 
      break; 
    } 
}

有了這個，你只能選擇3 TextView的，但如果你要取消的TextView還那麼你必須（count--;）那裏。

來源

2016-09-08 06:44:34 Pawanpreet

爲了取消選擇，我必須再放一個條件？ –

嘗試改變changeViewBackground方法以下，

private int count=0; 
private void changeViewBackground(TextView tv){ 
count++; 

if(count<=3){ 
tv.setTextColor(getResources().getColor(R.color.black)); 
tv.setSelected(true); 
}else{ 
count=0; 
tv.setTextColor(getResources().getColor(R.color.white)); 
tv.setSelected(false); 
} 

}

又通這就需要被突出顯示以上述方法中的TextView的。

來源

2016-09-08 06:39:37 ajantha

單擊突出顯示textview

回答

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