如何以编程方式设置对齐（右或左）TextView？

Question

What did I do wrong when setting textview in the following position?

- Linear Layout -

(left)imageview -textview-------------------------------------------- (right)imageview -textview

    parent.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
    parent.setOrientation(LinearLayout.HORIZONTAL);

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
    LinearLayout.LayoutParams.WRAP_CONTENT,convertDpToPixel(23));

    textView.setLayoutParams(params);
    icFeature.setLayoutParams(params);
    icFeature2.setLayoutParams(params);
    textView2.setLayoutParams(params);
    textView2.setGravity(Gravity.RIGHT);
    parent.addView(textView);
    parent.addView(icFeature);
    parent.addView(icFeature2);
    parent.addView(textView2);
    linearLayout.addView(parent);

Answer 1

Give below a try. It can be helpful,

RelativeLayout.LayoutParams textViewLayoutParams = new RelativeLayout.LayoutParams(
                    RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

// add a rule to align to the left
textViewLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);

//align right
textViewLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);

// make sure the rule was applied
textView.setLayoutParams(textViewLayoutParams);

Answer 2

You are setting the TextView's own Gravity attribute which controls how its text renders within its own bounds. You want to set the Gravity attribute on the LayoutParams instead:

https://developer.android.com/reference/android/widget/LinearLayout.LayoutParams#gravity

parent.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
parent.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
    LinearLayout.LayoutParams.WRAP_CONTENT, convertDpToPixel(23));
textView.setLayoutParams(params);

// Create new params for second view
LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(
    LinearLayout.LayoutParams.WRAP_CONTENT, convertDpToPixel(23));
params2.gravity = Gravity.RIGHT | Gravity.END; // Set gravity on layout params
textView2.setLayoutParams(params2);
// textView2.setGravity(Gravity.RIGHT); // Remove this

icFeature.setLayoutParams(params);
icFeature2.setLayoutParams(params);
parent.addView(textView);
parent.addView(icFeature);
parent.addView(icFeature2);
parent.addView(textView2);
linearLayout.addView(parent);

Hope that helps!