How do I change the size of the full text of the program?












0















I have a setting layout to change my appearance app.
I want to put a SeekBar to change all of text size in my app.
But I don't know what to do to get it done.
I would appreciate if you guide me.










share|improve this question



























    0















    I have a setting layout to change my appearance app.
    I want to put a SeekBar to change all of text size in my app.
    But I don't know what to do to get it done.
    I would appreciate if you guide me.










    share|improve this question

























      0












      0








      0








      I have a setting layout to change my appearance app.
      I want to put a SeekBar to change all of text size in my app.
      But I don't know what to do to get it done.
      I would appreciate if you guide me.










      share|improve this question














      I have a setting layout to change my appearance app.
      I want to put a SeekBar to change all of text size in my app.
      But I don't know what to do to get it done.
      I would appreciate if you guide me.







      android android-studio text-size






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 18 '18 at 14:16









      programdanprogramdan

      134




      134
























          1 Answer
          1






          active

          oldest

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          3














          Try this



          activity_main.xml



          <?xml version="1.0" encoding="utf-8"?>
          <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:gravity="center"
          android:orientation="vertical"
          tools:context=".MainActivity">

          <TextView
          android:id="@+id/textView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:textSize="14sp"
          android:text="Text" />

          <SeekBar
          android:id="@+id/seekBar"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_marginLeft="20dp"
          android:layout_marginRight="20dp" />

          </LinearLayout>


          onCreateMethod of MainActivity class:



          @Override
          protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);


          final TextView textView = findViewById(R.id.textView);
          SeekBar seekBar = findViewById(R.id.seekBar);


          seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

          @Override
          public void onStopTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onStartTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
          textView.setTextSize(progress);

          }
          });
          }


          Try to modify this code as your preference.






          share|improve this answer
























          • I know this! But I don't know how can I change text size of an object from another class.

            – programdan
            Nov 19 '18 at 8:28











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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          3














          Try this



          activity_main.xml



          <?xml version="1.0" encoding="utf-8"?>
          <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:gravity="center"
          android:orientation="vertical"
          tools:context=".MainActivity">

          <TextView
          android:id="@+id/textView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:textSize="14sp"
          android:text="Text" />

          <SeekBar
          android:id="@+id/seekBar"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_marginLeft="20dp"
          android:layout_marginRight="20dp" />

          </LinearLayout>


          onCreateMethod of MainActivity class:



          @Override
          protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);


          final TextView textView = findViewById(R.id.textView);
          SeekBar seekBar = findViewById(R.id.seekBar);


          seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

          @Override
          public void onStopTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onStartTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
          textView.setTextSize(progress);

          }
          });
          }


          Try to modify this code as your preference.






          share|improve this answer
























          • I know this! But I don't know how can I change text size of an object from another class.

            – programdan
            Nov 19 '18 at 8:28
















          3














          Try this



          activity_main.xml



          <?xml version="1.0" encoding="utf-8"?>
          <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:gravity="center"
          android:orientation="vertical"
          tools:context=".MainActivity">

          <TextView
          android:id="@+id/textView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:textSize="14sp"
          android:text="Text" />

          <SeekBar
          android:id="@+id/seekBar"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_marginLeft="20dp"
          android:layout_marginRight="20dp" />

          </LinearLayout>


          onCreateMethod of MainActivity class:



          @Override
          protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);


          final TextView textView = findViewById(R.id.textView);
          SeekBar seekBar = findViewById(R.id.seekBar);


          seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

          @Override
          public void onStopTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onStartTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
          textView.setTextSize(progress);

          }
          });
          }


          Try to modify this code as your preference.






          share|improve this answer
























          • I know this! But I don't know how can I change text size of an object from another class.

            – programdan
            Nov 19 '18 at 8:28














          3












          3








          3







          Try this



          activity_main.xml



          <?xml version="1.0" encoding="utf-8"?>
          <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:gravity="center"
          android:orientation="vertical"
          tools:context=".MainActivity">

          <TextView
          android:id="@+id/textView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:textSize="14sp"
          android:text="Text" />

          <SeekBar
          android:id="@+id/seekBar"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_marginLeft="20dp"
          android:layout_marginRight="20dp" />

          </LinearLayout>


          onCreateMethod of MainActivity class:



          @Override
          protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);


          final TextView textView = findViewById(R.id.textView);
          SeekBar seekBar = findViewById(R.id.seekBar);


          seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

          @Override
          public void onStopTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onStartTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
          textView.setTextSize(progress);

          }
          });
          }


          Try to modify this code as your preference.






          share|improve this answer













          Try this



          activity_main.xml



          <?xml version="1.0" encoding="utf-8"?>
          <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:gravity="center"
          android:orientation="vertical"
          tools:context=".MainActivity">

          <TextView
          android:id="@+id/textView"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:textSize="14sp"
          android:text="Text" />

          <SeekBar
          android:id="@+id/seekBar"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_marginLeft="20dp"
          android:layout_marginRight="20dp" />

          </LinearLayout>


          onCreateMethod of MainActivity class:



          @Override
          protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);


          final TextView textView = findViewById(R.id.textView);
          SeekBar seekBar = findViewById(R.id.seekBar);


          seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

          @Override
          public void onStopTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onStartTrackingTouch(SeekBar seekBar) {
          }

          @Override
          public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
          textView.setTextSize(progress);

          }
          });
          }


          Try to modify this code as your preference.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 18 '18 at 14:42









          tm13tm13

          5381320




          5381320













          • I know this! But I don't know how can I change text size of an object from another class.

            – programdan
            Nov 19 '18 at 8:28



















          • I know this! But I don't know how can I change text size of an object from another class.

            – programdan
            Nov 19 '18 at 8:28

















          I know this! But I don't know how can I change text size of an object from another class.

          – programdan
          Nov 19 '18 at 8:28





          I know this! But I don't know how can I change text size of an object from another class.

          – programdan
          Nov 19 '18 at 8:28


















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