intent的简单用法
案例一
传值：
Intent intent=new Intent();
intent.putExtra("extra", "这是页面一传来的值！");
intent.setClass(Test_for_intentActivity.this, actpage2.class);
startActivity(intent);
取值：
Intent intent=getIntent();
String StringE=intent.getStringExtra("extra");
TextView text2=(TextView)findViewById(R.id.textView2);
text2.setText(StringE);
打开网页
Uri uri = Uri.parse("http://www.google.com");
Intent it = new Intent(Intent.ACTION_VIEW,uri);
startActivity(it);
拨打电话
Uri uri =Uri.parse("tel:xxxxxx");
Intent it = new Intent(Intent.ACTION_DIAL,uri);
startActivity(it);
6.调用发短信的程序
Intent it = newIntent(Intent.ACTION_VIEW);
it.putExtra("sms_body", "TheSMS text");
it.setType("vnd.android-dir/mms-sms");
startActivity(it);
//发送附件
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/eoe.mp3");
sendIntent.setType("audio/mp3");
startActivity(Intent.createChooser(it, "Choose Email Client"));
