Zi 字媒體

示範 XML xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:id="@+id/t1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> android.support.constraint.ConstraintLayout> JAVA public class MainActivity extends AppCompatActivity{ TextView t1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); t1=(TextView)findViewById(R.id.t1); t1.setText("Ihavaanappleandtwoeggsandthreecandiesapple"); SpannableStringBuilder spannable = new SpannableStringBuilder(t1.getText().toString());// 用於可變字符串 spannable.setSpan( new ForegroundColorSpan(Color.rgb(255,0,0)), 0, 20, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); spannable.setSpan( new ForegroundColorSpan(Color.rgb(0,255,0)), 20, 30, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); spannable.setSpan( new ForegroundColorSpan(Color.rgb(0,0,255)), 30, t1.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); t1.setText(spannable); } } 展示