Gradient Shader

TextView tv = findViewById(R.id.tv);
tv.setText("Our Text");
tv.setTextColor(startColor);
Shader textShader = new LinearGradient(0, 0, tv.getPaint().measureText(tv.getText().toString()), tv.getTextSize(),
                new int[]{startColor, endColor},
                new float[]{0, 1}, Shader.TileMode.CLAMP);