Android消息通知Totast的实现

import android.view.Gravity;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.Toast;

public class MainActivity extends Activity {

private Button totast1;

private Button totast2;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

totast1=(Button) findViewById(R.id.totastshort);

totast1.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Toast t=Toast.makeText(MainActivity.this,"hello my first short totast",Toast.LENGTH_SHORT);

t.setGravity(Gravity.CENTER, -10, 0);

t.show();

}

});

totast2=(Button) findViewById(R.id.totastlong);

totast2.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Toast t1=Toast.makeText(MainActivity.this, "long totast",Toast.LENGTH_LONG);

ImageView i=new ImageView(MainActivity.this);

i.setImageResource(R.drawable.ic_launcher);

t1.setView(i);

t1.show();

}

} );

}

4.注意:最后不要忘记totast的show().

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