1.Toastandroid
android中的Toast是一個很是友好方便的用戶界面交互形式,經過彈出一個吐司來警告、提示用戶。app
Toast的系統默認形式很是簡單ide
Toast.makeText(MainActivity.this, "This is a normal toast!",Toast.LENGTH_SHORT);
效果就是從屏幕的下方彈出一個吐司。提示 this is a normal toast!學習
固然咱們也能夠自定義toast的彈出位置甚至彈出的內容不只只能夠是文字,其餘的控件也能夠,自定義代碼以下:ui
import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.Gravity; import android.view.View; import android.view.animation.Animation; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findViewById(R.id.button).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { LinearLayout ll = new LinearLayout(MainActivity.this); TextView tv = new TextView(MainActivity.this); tv.setText("this is a textview"); ImageView imv = new ImageView(MainActivity.this); imv.setImageResource(R.mipmap.ic_launcher); ll.addView(tv); ll.addView(imv); Toast t = Toast.makeText(MainActivity.this, "This is a normal toast!", Toast.LENGTH_SHORT); t.setGravity(Gravity.CENTER,0,0); //set the position of the toast t.setView(ll); t.show(); } }); } }
效果是彈出的toast內容包括一段文字和一張圖片。this
2.Notification(通知)spa
咱們平時用的應用天天不停的給咱們發通知,這個通知就是Notification。code
Notification的使用方法。orm
import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.v7.app.NotificationCompat; import android.view.Gravity; import android.view.View; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity { public static final int NOTIFIVATION_ID = 1200; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final PendingIntent pi = PendingIntent.getActivity(MainActivity.this, 0, new Intent(MainActivity.this,MainActivity.class), PendingIntent.FLAG_CANCEL_CURRENT); findViewById(R.id.button).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { NotificationCompat.Builder builer = new NotificationCompat.Builder(MainActivity.this); builer.setContentIntent(pi); //set notifiction onClick method builer.setSmallIcon(R.mipmap.ic_launcher); builer.setContentTitle("You have a new message!"); builer.setContentText("This is a message!You've made an notification!"); Notification notification = builer.build(); NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); manager.notify(NOTIFIVATION_ID,notification); } }); } }
此爲安卓用戶界面大體知識的完結……接下來的時間學習簡單的安卓系統功能!blog