Java – Changing font color runtime Android

androidjava

I am using EditText for getting userInput but the problem I am
facing is that I want to change the font color at runtime but in the
same Edittext as I am able to change the font type but as I change the
font color it changes for the whole editext but I need to change the
color for specfic text only .

And one more issue issue is that when making an edittext with the
height more than the "fillparent" property I am getting the cursor
postion in middle but I want it to be at the top always i.e. at the
start ..

Is there any other widget available which will provide me the solution
for both the problems?

Best Solution

Alignment of text within an EditText widget can be controlled via gravity:

editText.setGravity(Gravity.TOP);

To attach markup objects to the EditText's content you can use the Editable interface:

EditText editText = (EditText) findViewById(R.id.editview);
SpannableStringBuilder builder = new SpannableStringBuilder();
builder.append("one red word");
builder.setSpan(new ForegroundColorSpan(Color.RED), 4, 7, Spanned.SPAN_COMPOSING);
editText.setText(builder, BufferType.EDITABLE);

Related Solutions

Android – Strange OutOfMemory issue while loading an image to a Bitmap object

To fix the OutOfMemory error, you should do something like this:

BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 8;
Bitmap preview_bitmap = BitmapFactory.decodeStream(is, null, options);

This inSampleSize option reduces memory consumption.

Here's a complete method. First it reads image size without decoding the content itself. Then it finds the best inSampleSize value, it should be a power of 2, and finally the image is decoded.

// Decodes image and scales it to reduce memory consumption
private Bitmap decodeFile(File f) {
    try {
        // Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream(f), null, o);

        // The new size we want to scale to
        final int REQUIRED_SIZE=70;

        // Find the correct scale value. It should be the power of 2.
        int scale = 1;
        while(o.outWidth / scale / 2 >= REQUIRED_SIZE && 
              o.outHeight / scale / 2 >= REQUIRED_SIZE) {
            scale *= 2;
        }

        // Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
    } catch (FileNotFoundException e) {}
    return null;
}

Android – How to close/hide the Android soft keyboard programmatically

You can force Android to hide the virtual keyboard using the InputMethodManager, calling hideSoftInputFromWindow, passing in the token of the window containing your focused view.

// Check if no view has focus:
View view = this.getCurrentFocus();
if (view != null) {  
    InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}

This will force the keyboard to be hidden in all situations. In some cases, you will want to pass in InputMethodManager.HIDE_IMPLICIT_ONLY as the second parameter to ensure you only hide the keyboard when the user didn't explicitly force it to appear (by holding down the menu).

Note: If you want to do this in Kotlin, use: context?.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager

Kotlin Syntax

// Only runs if there is a view that is currently focused
this.currentFocus?.let { view ->
    val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
    imm?.hideSoftInputFromWindow(view.windowToken, 0)
}

Best Solution

Related Solutions

Android – Strange OutOfMemory issue while loading an image to a Bitmap object

Android – How to close/hide the Android soft keyboard programmatically

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