android拨打电话二三事

相信很多人都做过拨打电话功能，拨打电话有两个界面，一个打电话界面，一个是拨号界面，现在给大家实现一下啊
1.添加权限：

  <uses-permission android:name="android.permission.CALL_PHONE"></uses-permission>

2.立即拨打：

 //用intent启动拨打电话
 Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + "18211673289");
                if (ActivityCompat.checkSelfPermission(ContactActivity.this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
                    // TODO: Consider calling
                    // ActivityCompat#requestPermissions
                    // here to request the missing permissions, and then overriding
                    // public void onRequestPermissionsResult(int requestCode, String[] permissions,
                    // int[] grantResults)
                    // to handle the case where the user grants the permission. See the documentation
                    // for ActivityCompat#requestPermissions for more details.
                    return;
                }
                this.startActivity(intent);

3.跳转到拨号页面:

//用intent启动拨打电话
                Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + "18211673289");
                if (ActivityCompat.checkSelfPermission(ContactActivity.this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
                    // TODO: Consider calling
                    // ActivityCompat#requestPermissions
                    // here to request the missing permissions, and then overriding
                    // public void onRequestPermissionsResult(int requestCode, String[] permissions,
                    // int[] grantResults)
                    // to handle the case where the user grants the permission. See the documentation
                    // for ActivityCompat#requestPermissions for more details.
                    return;
                }
                this.startActivity(intent);
            }

两种方式分别对应两种需求，使用时请参考具体需求，另外上面代码是android6.0动态权限，当设置 targetSdkVersion 23时，就需要这样添加权限。
记：华为手机6.0系统在测试跳转到拨号界面时，需要在华为应用管理里面允许拨打电话权限，不然会没有反应。