安卓学习第26课——textSwitcher
点击文字,实现文字转换,只用到了数组,还有动画效果,事件监听。
<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"> <TextSwitcher android:id="@+id/textSwitcher1" android:layout_width="wrap_content" android:layout_height="match_parent" android:inAnimation="@android:anim/slide_in_left" android:outAnimation="@android:anim/slide_out_right" android:onClick="next"/> </LinearLayout>
package com.example.textswitcher; import android.app.Activity; import android.graphics.Color; import android.os.Bundle; import android.view.View; import android.widget.TextSwitcher; import android.widget.TextView; import android.widget.ViewSwitcher.ViewFactory; public class MainActivity extends Activity { TextSwitcher textSwitcher; String[] strs=new String[]{ "高等数学", "线性代数", "离散数学", "安卓讲义" }; int curStr; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textSwitcher=(TextSwitcher) findViewById(R.id.textSwitcher1); textSwitcher.setFactory(new ViewFactory(){ @Override public View makeView() { TextView tv=new TextView(MainActivity.this); tv.setTextSize(40); tv.setTextColor(Color.MAGENTA); return tv; } }); next(null); } public void next(View v) { textSwitcher.setText(strs[curStr++%strs.length]); } }