Come dividere un frammento in Android in due colori

Question

Per prima cosa vorrei dire per favore non contrassegnare questa domanda come duplicata. Si differenzia dagli altri post in un modo critico. Qualcuno sa come posso dividere il colore del frammento in due colori proprio nel mezzo? Grazie a tutti!

Answer 1

ho raggiunto questo creando lo sfondo ideale in photoshop, salvandolo come .png, quindi impostandolo come sfondo dell'attività per quando è necessario. Semplice, pulito, facile, e poiché ho solo bisogno di due colori tutto il tempo, non devo preoccuparmi che l'immagine diventi pixelata.

Answer 2

qui è di esempio per utilizzare gradiente

float in[] = new float[] {0f,1f}; 
    TextView textView= (TextView)findViewById(R.id.tv_test); 
    Shader shader = new LinearGradient(
      0, textView.getTextSize(), textView.getWidth(), textView.getHeight(), new int[]{Color.RED, Color.BLUE},in, 
      Shader.TileMode.CLAMP); 
    textView.getPaint().setShader(shader); 

Per raggiungere Seconda Semplicemente utente Framelayout xml

<FrameLayout 
    android:id="@+id/fl_test" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content"> 

    <LinearLayout 
     android:id="@+id/ll_test" 
     android:layout_width="200dp" 
     android:layout_height="100dp" 
     android:background="@android:color/white" 
     android:orientation="horizontal"> 

     <View 
      android:layout_width="wrap_content" 
      android:layout_height="100dp" 
      android:layout_weight="1" 
      android:background="@android:color/holo_red_dark" /> 

     <View 
      android:layout_width="wrap_content" 
      android:layout_height="100dp" 
      android:layout_weight="1" 
      android:background="@android:color/holo_blue_dark" /> 
    </LinearLayout> 

    <TextView 
     android:id="@+id/tv_test2" 
     android:layout_width="200dp" 
     android:layout_height="100dp" 
     android:layout_gravity="center" 
     android:background="@android:color/transparent" 
     android:gravity="center" 
     android:text="A" 
     android:textColor="@android:color/white" 
     android:textSize="100sp" /> 

</FrameLayout> 

Per Terzo uno si deve scrivere poco e fare un certo lavoro sul livello di pixel

<TextView 
    android:id="@+id/tv_test" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="H" 
    android:textColor="@android:color/holo_red_dark" 
    android:textSize="100sp" /> 

<FrameLayout 
    android:id="@+id/fl_test" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content"> 

    <LinearLayout 
     android:id="@+id/ll_test" 
     android:layout_width="200dp" 
     android:layout_height="100dp" 
     android:background="@android:color/white" 
     android:orientation="horizontal"> 

     <View 
      android:layout_width="wrap_content" 
      android:layout_height="100dp" 
      android:layout_weight="1" 
      android:background="@android:color/holo_red_dark" /> 

     <View 
      android:layout_width="wrap_content" 
      android:layout_height="100dp" 
      android:layout_weight="1" 
      android:background="@android:color/holo_blue_dark" /> 
    </LinearLayout> 

    <TextView 
     android:id="@+id/tv_test2" 
     android:layout_width="200dp" 
     android:layout_height="100dp" 
     android:layout_gravity="center" 
     android:background="@android:color/transparent" 
     android:gravity="center" 
     android:text="A" 
     android:textColor="@android:color/white" 
     android:textSize="100sp" /> 

</FrameLayout> 

<ImageView 
    android:id="@+id/iv_test" 
    android:layout_width="200dp" 
    android:layout_height="200dp" /> 

public class MainActivity extends AppCompatActivity { 
View linearLayout; 
View tvTest2; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
    setSupportActionBar(toolbar); 

    TextView textView = (TextView) findViewById(R.id.tv_test); 
    Shader shader = new LinearGradient(
      0, textView.getTextSize()/2, textView.getTextSize(), textView.getTextSize()/2,Color.RED, Color.BLUE, 
      Shader.TileMode.CLAMP); 
    textView.getPaint().setShader(shader); 

    linearLayout = findViewById(R.id.ll_test); 
    tvTest2 = findViewById(R.id.tv_test2); 

} 

@Override 
protected void onResume() { 
    super.onResume(); 

    new Handler().postDelayed(new Runnable() { 
     @Override 
     public void run() { 
      ImageView imageView = (ImageView) findViewById(R.id.iv_test); 

      Bitmap b1 = getBitmapFromView(linearLayout); 
      Bitmap b2 = getBitmapFromView(tvTest2); 
      imageView.setImageBitmap(textEffect(b1, b2)); 
     } 
    },2000); 

} 

public Bitmap textEffect(Bitmap image, Bitmap text) { 
    if (image.getWidth() != text.getWidth() || 
      image.getHeight() != text.getHeight()) { 
     throw new IllegalArgumentException("Dimensions are not the same!"); 
    } 

    for (int y = 0; y < image.getHeight(); ++y) { 
     for (int x = 0; x < image.getWidth(); ++x) { 
      int textPixel = text.getPixel(x, y); 
      int imagePixl = image.getPixel(x,y); 

      int red = Color.red(textPixel); 
      int blue = Color.blue(textPixel); 
      int green = Color.green(textPixel); 
      int alpha = Color.alpha(textPixel); 

      Log.i("TAG", "textEffect: "+x+"-"+y+",-->"+red+","+blue+","+green+","+alpha); 

      /*Since text color is white so give the color of background to it 
      * else make it white*/ 
      if (red == 255) { 
       if (blue == 255) { 
        if (green == 255) { 
         image.setPixel(x, y, imagePixl); 
        }else 
        { 
         image.setPixel(x, y, textPixel); 
        } 
       }else{ 
        image.setPixel(x, y, textPixel); 
       } 
      }else 
      { 
       image.setPixel(x, y, textPixel); 
      } 
     } 
    } 
    return image; 
} 


public static Bitmap getBitmapFromView(View view) { 
    //Define a bitmap with the same size as the view 
    Bitmap returnedBitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888); 
    //Bind a canvas to it 
    Canvas canvas = new Canvas(returnedBitmap); 
    //Get the view's background 
    Drawable bgDrawable = view.getBackground(); 
    if (bgDrawable != null) 
     //has background drawable, then draw it on the canvas 
     bgDrawable.draw(canvas); 
    else 
     //does not have background drawable, then draw white background on the canvas 
     canvas.drawColor(Color.WHITE); 
    // draw the view on the canvas 
    view.draw(canvas); 
    //return the bitmap 
    return returnedBitmap; 
} 
} 

Quello che esattamente vuole raggiungere ??
Primo uno
Secondo uno
Terzo?

Answer 3

Definire un TextView

<TextView 
    android:id="@+id/tv" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:padding="12dp" 
    android:text="O" 
    android:textColor="#88022b54" 
    android:textSize="250sp" 
    android:textStyle="bold" 
    android:shadowColor="#ff2e7cca" 
    android:shadowDx="0" 
    android:shadowDy="0" 
    android:shadowRadius="1"/> 

Poi

Shader shader = new LinearGradient(
      0, mytv.getTextSize()/2, mytv.getTextSize(), mytv.getTextSize()/2, 
      Color.RED, Color.BLUE, 
      Shader.TileMode.CLAMP); 
    mytv.getPaint().setShader(shader); 

Answer 4

Si può fare come questo

String text = "<font color=#cc0029>Erste Farbe</font> <font color=#ffcc00>zweite Farbe</font>"; 
yourtextview.setText(Html.fromHtml(text));