Android提示框

• Toast.makeText

Toast.makeText(this, "提示消息", Toast.LENGTH_LONG).show();

• 特点
  自动消失
  无交互能力

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• AlertDialog.Builder

AlertDialog.Builder builder  = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("确认" ) ;
builder.setMessage( "提示消息" ) ;
builder.setPositiveButton("是" ,  null );
builder.show();

• 特点
  需要用户确认
  有交互能力