Android EditText：如何摆脱图形故障？

Question

When I create an EditText in a standard-activity using the following setContentView with the following View:

public final class TestView extends LinearLayout {

    public TestView(Context context) {
        super(context);

        EditText text2 = new EditText(context);
        text2.setText("Test");
        this.addView(text2);
    }

}

I get graphical glitches like the following when editing it:

How can I get rid of those? Is this an Android Bug?

Answer 1

You haven't set any parameters to the EditText. Try setting the parameters for it and check,

EditText text2 = new EditText(context);
        text2.setText("Test");      
        text2 .setLayoutParams(new LinearLayout.LayoutParams(
                LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
                1f));
        text2 .setWidth(100);       
        text2 .setMaxLines(1);
        this.addView(text2);