Zi 字媒體
2017-07-25T20:27:27+00:00
ImageView ig1;
ig1=(ImageView)findViewById(R.id.ig1);
ig1.setBackgroundResource(R.mipmap.returnn);//圖片資源要先放置到mipmap資料夾中
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"
tools:context=".MainActivity">
<ImageView
android:id="@+id/ig1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
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 {
ImageView ig1;
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ig1=(ImageView)findViewById(R.id.ig1);
ig1.setBackgroundResource(R.mipmap.returnn);
}
}
展示
寫了
5860316篇文章,獲得
23313次喜歡